Login

Contact Us
Calculus and Above
Calculus Questions? Ask a Mathematician for Answers ASAP
Not a Calculus and Above Question?
How JustAnswer Works:
Ask an Expert
Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
Get a Professional Answer
Via email, text message, or notification as you wait on our site.
Ask follow up questions if you need to.
100% Satisfaction Guarantee
Rate the answer you receive.
Ask SusanAthena Your Own Question
SusanAthena
,
Master's Degree
Category:
Calculus and Above
Satisfied Customers:
4329
Experience:
Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.
12809769
Type Your Calculus and Above Question Here...
SusanAthena is online now
1.(TCO 5) We have a binomial experiment with p = 0.4 and n
Customer Question
1.(TCO 5) We have a binomial experiment with p = 0.4 and n = 2.
(A) Set up the probability distribution by showing all x values and their associated probabilities.
(B) Compute the mean, variance, and standard deviation.
2. (TCO 4) What is the probability that the student carries a credit card given he's a sophomore?
Class Credit Card Carrier Not a Credit Card Carrier Total
Freshman 33 27 60
Sophomore 6 34 40
Total 39 61 100
3. Some students were asked if they carry a credit card. Here are the responses.
Class Credit Card Carrier Not a Credit Card Carrier Total
Freshman 33 27 60
Sophomore 6 34 40
Total 39 61 100
4. (TCO 4) What is the probability that the student is a sophomore and doesn't carry a credit card?
Class Credit Card Carrier Not a Credit Card Carrier Total
Freshman 33 27 60
Sophomore 6 34 40
Total 39 61 100
Submitted:
2 years ago.
Category:
Calculus and Above
Share this conversation
Expert:
SusanAthena
replied 2 years ago.
Hi. Thank you for your question.
It looks like there's a question missing for part 3.
Can you please add it?
Kind regards,
Susan
Ask Your Own Calculus and Above Question
Customer:
replied 2 years ago.
Part 3. What is the probability that the student didn't carry a credit card?
Expert:
SusanAthena
replied 2 years ago.
Thanks for your questions.
Your answers are below. If you have any questions, please feel free to follow up.
If my answers are helpful, please click Accept, so that I can get credit for my work.
Kind regards,
Susan
1.
Using Excel
x p(x)
0 0.36
1 0.48
2 0.16
x p(x) x * p(x) x^2 * p(x)
0 0.36 0 0
1 0.48 0.48 0.48
2 0.16 0.32 0.64
SUM 1 0.8 1.12
Mean (µ) of a probability distribution is ∑[x*p(x)] = 0.8
Variance (s^2) = ∑(x^2 * p[x])  µ^2
s^2 = 1.12  0.8^2
s^2 = 1.12  0.64
s^2 = 0.48
SD = sqrt(s^2)
SD = sqrt(0.48)
SD = 0.69
2.
6/40 = 0.15
3.
61/100 = 0.61
4.
34/100 =0.34
SusanAthena, Master's Degree
Category:
Calculus and Above
Satisfied Customers:
4329
Experience:
Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.
SusanAthena and 2 other Calculus and Above Specialists are ready to help you
Ask your own question now
Customer:
replied 2 years ago.
1. (TCO 7) Which of the following is the major anthropogenic source of excess carbon dioxide? (Points : 3)
Refrigerants, solvents, and fire retardants.
Microbial fermentation of organic matter in coal mines, oil well, and livestock.
Emissions from automobiles and chemical fertilizers.
Evaporation from the Earth['s oceans.
Combustion of fossil fuels and deforestation.
2. (TCO 7) Greenhouse gases, like carbon dioxide and methane, differ from atmospheric gases, like oxygen and nitrogen, in that (Points : 3)
greenhouse gases absorb and then reradiate infrared radiation towards the Earth's surface.
nongreenhouse gases reflect solar radiation.
greenhouse gases reflect solar radiation back into space.
greenhouse gases produce heat from chemical reactions.
nongreenhouse gases absorb greenhouse gases.
3. (TCO 7) The major anthropogenic source(s) of excess nitrous oxide in the atmosphere is/are (Points : 3)
refrigerants, solvents, and fire retardants.
microbial fermentation of organic matter in coal mines, oil well, and livestock.
oceans, agriculture, and biomass burning.
evaporation from the Earth's oceans.
combustion of fossil fuels.
4. (TCO 7) The day to day variations in temperature, air pressure, wind, humidity, and precipitation constitute an area's (Points : 3)
climate.
weather.
geography.
meteorology.
climate change.
5. (TCO 7) The major federal initiative aimed at controlling emissions is the (Points : 3)
Montreal Protocol.
National Ambient Air Quality Standards.
Global Climate Change Initiative.
Basel Convention.
Kyoto Protocol.
6. (TCO 8) The major source of sulfur dioxide emissions affecting the eastern United States and Canada has been identified as (Points : 3)
some 50 coal burning power plants.
some 50 nuclear power plants.
cars and trucks.
coming from the many auto and truck plants in the region.
hundreds of thousands of home coal burning stoves and furnaces.
7. (TCO 8) Acid precipitation is likely to have the greatest economic impact on humans through (Points : 3)
adverse health effects caused by direct contact.
adverse health effects caused by mobilization of toxic elements.
die offs of forests and aquatic ecosystems.
die offs of agricultural crops.
deterioration of building materials.
8. (TCO 8) Which of the following was TRUE of the ban on the use of lead in gasoline? (Points : 3)
Despite the ban, lead levels in the air did not change.
Lead was never a serious health or environmental hazard.
Lead could not be removed without major changes in automobile engines.
Once banned, lead levels quickly dropped in the population and the environment.
High lead levels were only a problem in Greenland.
9. (TCO 8) Pollutants capable of causing immediate lifethreatening physiological illness are said to be (Points : 3)
chronic.
acute.
carcinogenic.
radioactive.
lethal.
10. (TCO 8) The brownish color of air in some polluted urban areas is due to (Points : 3)
nitrogen oxides producing photochemical smog.
sulfur oxides producing photochemical smog.
ozone depletion.
carbon dioxide.
soot from the industrial revolution.
Expert:
SusanAthena
replied 2 years ago.
Hi. Thanks for requesting me. Since this is on a different topic, please post to a new question. I'm sorry to say that I can't assist, but perhaps another expert can.
Kind regards,
Susan
Ask Your Own Calculus and Above Question
Customer:
replied 2 years ago.
How many ways can an EMT union committee of 5 be chosen from 25 EMTs? (Points : 3)
100
125
15,504
53,130
Which of the following cannot be a probability? (Points : 3)
0.0031
0.0031
3.1
neither b nor c
List the sample space for dealing only clubs from a deck of cards. (Points : 3)
{A, 1, 2, 3, 4, 5, 6, 7, 8, 9, J, Q, K}
{A, 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K}
{A, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K}
{ 1, 2, 3, 4, 5, 6, 7, 8, 9, J, Q, K}
What is the probability of choosing a queen on the 2nd draw if the first was a queen (without replacement)? (Points : 3)
0.077
0.041
0.059
0.023
A health class has 23 women and 18 men. If a student is chosen randomly to be the team leader, what is the probability the student is a woman? (Points : 3)
0.439
0.561
0.23
0.77
Compute the following: 4! ÷ (0! * 2!) (Points : 3)
12
24
2
0
Decide whether the experiment is a binomial, Poisson, or neither based on the information given. Each week a man plays a game in which he has a 21% chance of winning. The random variable is the number of times he wins in 64 weeks. (Points : 3)
binomial
Poisson
neither
Given a Poisson distribution with mean = 4. Find P(X > 3). (Points : 3)
0.195
0.238
0.433
0.567
Given the random variable X = {4, 5} with P(4) = 0.4 and P(5) = 0.6. Find E(X). (Points : 3)
1.6
4.6
2.4
3.0
(TCO 5) If X = {10, 20, 30, 40} and P(10) = 0.30, P(20) = 0.30, P(30) = 0.30, and P(40) = 0.30, can distribution of the random variable X be considered a probability distribution? (Points : 3)
yes
no
f X = {4, 6, 8, 11} and P(4) = 0.2, P(6) = 0.3, P(8) = 0.4, and P(11) = 0.1, can distribution of the random variable X be considered a probability distribution? (Points : 3)
yes
no
The number of shoes in your closet represents what kind of distribution? (Points : 3)
discrete
continuous
The number of brothers and sisters in your family represents what kind of distribution? (Points : 3)
discrete
continuous
The amount of posts in our class at a given time represents what kind of distribution? (Points : 3)
discrete
continuous
Customer:
replied 2 years ago.
1.(TCO 5) We have a binomial experiment with p = 0.6 and n = 2.
(A) Set up the probability distribution by showing all x values and their associated probabilities.
(B) Compute the mean, variance, and standard deviation.
2. (TCO 4) What is the probability that the student carries a credit card given he's a sophomore?
Class Credit Card Carrier Not a Credit Card Carrier Total
Freshman 33 27 260
Sophomore 6 24 40
Total 39 61 100
3. Some students were asked if they carry a credit card. Here are the responses.
Class Credit Card Carrier Not a Credit Card Carrier Total
Freshman 33 27 60
Sophomore 6 24 40
Total 39 61 100
What is the probability that the student didn't carry a credit card?
4. (TCO 4) What is the probability that the student is a sophomore and doesn't carry a credit card?
Class Credit Card Carrier Not a Credit Card Carrier Total
Freshman 33 27 60
Sophomore 6 24 40
Total 39 61 100
Expert:
SusanAthena
replied 2 years ago.
Hi. Thanks for your question.
Question 1 is different from before, because it has a different probability.
Questions 2  4 are the same. It looks like you made a slight error entering the table (24 instead of 34), but otherwise the data and questions are the same.
Do you just need question 1 answered?
Ask Your Own Calculus and Above Question
Customer:
replied 2 years ago.
The question is asking 24 this time, not 34, so would it be the same answers?
Expert:
SusanAthena
replied 2 years ago.
Hi. The columns and rows have to add up, so I assumed that "34" was correct. 27 + 34 = 61 (column total); 6 + 34 = 40 (row total)
Please check the data again, thanks!
Ask Your Own Calculus and Above Question
Customer:
replied 2 years ago.
These are a different set of questions, the first set that i ask you was 34, now there are asking me 24 this time, i am kind of lost
Expert:
SusanAthena
replied 2 years ago.
Hi. I see that they're different questions. Please check the data again. The row and columns MUST total up. The table as you've given it can't be correct. It says, for example, that there are 6 sophomores with credit cards and 24 without. That would make 30 total. But the total given is 40. The table just doesn't make sense.
Kind regards,
Susan
Ask Your Own Calculus and Above Question
Customer:
replied 2 years ago.
For number 2. i made a mistake on the Freshmen is should be 60 and not 260
Expert:
SusanAthena
replied 2 years ago.
OK. I'm sorry to say that I won't be able to assist. The table doesn't make sense.
Kind regards,
Susan
Ask Your Own Calculus and Above Question
Customer:
replied 2 years ago.
Find the margin of error for the given values of c, s, and n.
C=0.90, s=3.9, n=49
E=_________
(Round to three decimal places as needed)
Construct the confidence interval for the population mean µ.
C= 0.95, x=8.1, s=0.3, and n=60
A 95% confidence interval for µ is _____, ______ (Round to two decimal places as needed.)
Construct the confidence interval for the population mean µ.
C= 0.95, x=16.5, s=6.0, and n=95
A 95% confidence interval for µ is _____, ______ (Round to two decimal places as needed.)
Use the confidence interval to find the estimated margin of error. Then find the sample mean.
A biologist reports a confidence interval of (2.5,3.3) when estimating the mean height in (in centimeters) of a sample of seedlings. The estimated margin of error is__________ , The sample mean is ________.
Find the minimum sample size n needed to estimate µ for the given values of c, s, and E.
C=0.98, s=6.6, and E=2
Assume that a preliminary sample has at least 30 members.
N=__________ (Round up to the nearest whole number)
You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals or the population mean. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals.
A random sample of 45 home theater systems has a mean price of $145.00 and a standard deviation of $18.30
Construct a 90% confidence interval for the population mean.
The 90% confidence interval is (____,____).
(Round to two decimal places as needed.)
Construct a 95% confidence interval for the population mean.
The 95% confidence interval is (____,____).
(Round to two decimal places as needed.)
You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider? If the convenient, use technology to construct the confidence intervals.
A random sample of 49 gas grills has a mean price of $639.60 and a standard deviation of $57.40
The 90% confidence interval is ( _____,_____). (Round to two decimal places as needed.)
The 95% confidence interval is ( _____,_____). (Round to two decimal places as needed.)
You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider? If the convenient, use technology to construct the confidence intervals.
A random sample of 45 eightounce servings of different juice drinks has a mean of 77.3 calories and a standard deviation of 42.7 calories.
The 90% confidence interval is ( _____,_____). (Round to one decimal places as needed.)
The 95% confidence interval is ( _____,_____). (Round to two decimal places as needed.)
People were polled on how many book they read the previous year. How many subjects are needed to estimate the number of books read the previous year within one book with 95% confidence? Initial survey results indicate that σ=11.5 books.
A 95% confidence level requires ______ subjects.
(Round up to the nearest whole number as needed.)
A doctor wants to estimate the HDL cholesterol of all 20to 29 year old females. How many subjects are needed to estimate the HDL cholesterol within 4 points with 99% confidence assuming σ = 17.2? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required?
A 99% confidence level requires ____ subjects.
(Round up to the nearest whole number as needed.)
A 95% confidence level requires ____ subjects
(Round up to the nearest whole number as needed.)
Construct the indicated confidence interval for the population mean µ using (a) a tdistribution. (b) If you had incorrectly used a normal distribution, which interval would be wider?
C= 0.95, x=14.3, s=3.0, n=7
The 95% confidence interval using a tdistribution is (____,_____).
(Round to one decimal place as needed.)
In the following situation, assume the random variable is normally distributed and use a normal distribution or a tdistribution to construct a 90% confidence interval for the population mean. If convenient, use technology to construct the confidence interval.
In a random sample of 10 adults from a nearby county, the mean waste generated
Per person per day was 3.95 pounds and the standard deviation was 1.38 pounds.
Repeat part (a), assuming the same statistics came from a sample size of 600. Compare the results.
For the sample of 10 adults, the 90% confidence intervals is (____,____).
(Round to two decimal places as needed.)
For the sample of 600 adults, the 90% confidence intervals is (____,____).
(Round to two decimal places as needed.)
15. Use the given confidence interval to find the margin of error and the sample proportion. (0.728,0.754)
E=_____ (Type an integer or a decimal)
P=_____(Type an integer or a decimal)
In a survey of 630 males ages 1864, 391 say they have gone to the dentist in the past year.
Construct 90% and 95% confidence intervals for the population proportion. Interpret the
results and compare the widths of the confidence intervals. If convenient, use technology
to construct the confidence intervals.
The 90% confidence interval for the population proportion p is _____ , _____.
(Round the final answers to the nearest thousandth as needed. Round all intermediate values to the nearest thousandth as needed.)
The 95% confidence interval for the population proportion p is _____ , _____.
(Round the final answers to the nearest thousandth as needed. Round all intermediate values to the nearest thousandth as needed.)
17. In a survey of 9000 women, 6431 say they change their nail polish once a week. Construct a 99% confidence interval for the population proportion of women who change their nail polish once a week.
A 90% confidence interval for the population proportion is (____,_____).
(Round the final answers to the nearest thousandth as needed. Round all intermediate values to the nearest thousandth as needed.)
18. A researcher wishes to estimate, with 90% confidence, the proportion of adults who have highspeed Internet access. Her estimate must be accurate within 5% of the true proportion.
a) Find the minimum sample size needed, using a prior study that found that 34% of the respondents said they have highspeed Internet access.
b) No preliminary estimate is available. Find the minimum sample size needed.
a) What is the minimum sample size needed using a prior study that found that 34% of the respondents said they have highspeed Internet access?
N=_____(Round up to the nearest whole number as needed.)
b) What is the minimum sample size needed assuming that no preliminary estimate is available?
N=_____ (Round up to the nearest whole number as needed.)
19. The table to the right shows the results of a survey in which 2600 adults from Country A, 1135 adults from Country B, and 1052 adults from Country C were asked if human activity contributes to global warming. Complete parts (a), (b) (c).
(a) Construct a 99% confidence interval for the proportion of adults from Country A who say human activity contributes to global warming.
(___,_____) (Round to three decimal places as needed.)
(b) Construct a 99% confidence interval for the proportion of adults from Country B who say human activity contributes to global warming.
(___,_____) (Round to three decimal places as needed.)
(c) Construct a 99% confidence interval for the proportion of adults from Country C who say human activity contributes to global warming.
(___,_____) (Round to three decimal places as needed.)
Adults who say that human activity contributes to global warming
Country A62%
Country B86%
Country C93%
20. The table shows the results of a survey in which separate samples of 400 adults each from the East, South, Midwest, and West were asked if traffic congestion is a serious problem in their community. Complete parts (a) and (b)
(a)Construct a 95% confidence interval for the proportion of adults from the West who say traffic congestion is a serious problem.
The 95% confidence interval for the proportion of adults from the East who say traffic congestion is a serious problem is (___,___) (Round to three decimal places as needed.)
(b) Construct a 95% confidence interval for the proportion of adults from the South who say traffic congestion is a serious problem.
The 95% confidence interval for the proportion of adults from the South who say traffic congestion is a serious problem is (___,___) (Round to three decimal places as needed.)
East: 35%
South:33%
Midwest:25%
West:55%
Expert:
SusanAthena
replied 2 years ago.
Hi. Thank you for requesting me.
Please post your new questions to a new question, thank you!
Ask Your Own Calculus and Above Question
Customer:
replied 2 years ago.
Hello i may not under stand what you are saying
What do you mean post your new questions to a new question?
Expert:
SusanAthena
replied 2 years ago.
Hi. Please start a new thread rather than posting back here, thank you!
Ask Your Own Calculus and Above Question
Share this conversation
JustAnswer in the News:
Askadoc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses workfromhome jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
What Customers are Saying:
Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.
Mary C.
Freshfield, Liverpool, UK
<
Last

Next
>
Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.
Mary C.
Freshfield, Liverpool, UK
This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!
Alex
Los Angeles, CA
Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.
GP
Hesperia, CA
I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.
Justin
Kernersville, NC
Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.
Esther
Woodstock, NY
Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.
Robin
Elkton, Maryland
He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.
Diane
Dallas, TX
Meet The Experts:
SusanAthena
Master's Degree
Satisfied Customers:
98
Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.
<
Last

Next
>
http://ww2.justanswer.com/uploads/homeworklady/20081124_125231_susannewavatar.jpg
SusanAthena's Avatar
SusanAthena
Master's Degree
Satisfied Customers:
98
Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.
http://ww2.justanswer.com/uploads/ED/educatortech/201267_1256_williams4.64x64.jpg
Mr. Gregory White's Avatar
Mr. Gregory White
Master's Degree
Satisfied Customers:
93
M.A., M.S. Education / Educational Administration
http://ww2.justanswer.com/uploads/CO/CosumelEyes/201254_4923_Profile.64x64.jpg
Ray Atkinson's Avatar
Ray Atkinson
Bachelor's Degree
Satisfied Customers:
45
Degrees in Math, Education and Accounting, years and years of tutoring.
http://ww2.justanswer.com/uploads/SO/sonofGauss/201266_20151_PortraitLHW.64x64.jpg
JACUSTOMERyrynbdjl's Avatar
JACUSTOMERyrynbdjl
Master's Degree
Satisfied Customers:
42
I have a MS in Mathematics and I have taught Mathematics for 10 years at the college level.
http://ww2.justanswer.com/uploads/dhouse1940/20100902_133023_DSCN2406.jpg
dhouse1940's Avatar
dhouse1940
Master's Degree
Satisfied Customers:
33
BS mathematics, MS biostatistics, 35+ yrs designing & analyzing biological experiments.
http://ww2.justanswer.com/uploads/AR/arubin9/201224_42617_ArthurRubinedit.64x64.jpg
Dr Arthur Rubin's Avatar
Dr Arthur Rubin
Doctoral Degree
Satisfied Customers:
32
Ph.D. in Mathematics, 1978, from the California Institute of Technology, over 20 published papers
http://ww2.justanswer.com/uploads/DO/Donbacongamer/201236_2337_mathmaster.64x64.jpg
Don's Avatar
Don
Master's Degree
Satisfied Customers:
29
M.S. Astronautical Engineering. Math/Sci/Comp Tutor
Related Calculus and Above Questions
Question
Date Submitted
hi i need my questions to be answered
11/20/2014
11/20/2014
Ryan
hi, are you really there?
11/19/2014
11/19/2014
Ryan
15 Math Multiple Choice Statistics questions. Will attach.
11/16/2014
11/16/2014
Ryan
41. If we fail to reject the null hypothesis, ________.
11/15/2014
11/16/2014
Ryan
31. The rejection region is defined by ________. (Points :
11/15/2014
11/16/2014
Ryan
Question 11.11. The time required to travel downtown at 10
11/15/2014
11/15/2014
SusanAthena
1. Numerical facts and figures that are collected through
11/15/2014
11/15/2014
SusanAthena
Springdale Shopping Survey (70 Points) The major shopping
11/14/2014
11/14/2014
Ryan
Use Probability Tables where applicable1) The electric
11/12/2014
11/12/2014
Ryan
I have this assignment due today and I just can't make sense
11/11/2014
11/11/2014
Ryan
Chat Now With A Tutor
SusanAthena
Tutor
4329 Satisfied Customers
Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.
X
Ask a Tutor
Get a Professional Answer. 100% Satisfaction Guaranteed.
108 Tutors are Online Now
Type Your Calculus and Above Question Here...
characters left: