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 Stevewh Your Own Question
Stevewh
,
Bachelor's Degree
Category:
Calculus and Above
Satisfied Customers:
7610
Experience:
I teach Calculus and Probability in an University since 1994
14153722
Type Your Calculus and Above Question Here...
Stevewh is online now
Find the mean for the given sample data. Unless indicated otherwise,
Customer Question
Find the mean for the given sample data. Unless indicated otherwise, round your answer to one more decimal place than is present in the original data values.
The students in Hugh Logan's math class took the Scholastic Aptitude Test. Their math scores are s hown below. Find the mean score. 536/357 608/343 344/566 340/470 596/482 a)464.2 b)476.0 C)473.7 d)455.1
Find the midrange for the given sample data.
Listed below are the amounts of time (in months) that the employees of an electronics company have been working at the company. Find the midrange. 12 21 26 37 4 53 61 66 75 76 85 91 132 155 a) 63.5 months b)71.5 months c)66.9 months d)83.5 months
Find the standard deviation for the given sample data. Round your answer to one more decimal place than is present in the original data. 20.0 21.5 27.4 47.3 13.1 11.1 a)4145.12 b) 37.34 c)13.11 d)3285.46
Find the indicated probability.
A bag contains 5 red marbles, 3 blue marbles, and 1 green marble. Find P(not blue).
a)1/3 b)3/2 c)6 d)2/3
Find the indicated probability. Round to the nearest thousandth.
In a blood testing procedure, blood samples from 6 people are combined into one mixture. The mixture will only test negative if all the individual samples are negative. If the probability that an individual sample tests positive is 0.11, what is the probability that the mixture will test positive?
0.00000177
1.000
0.503
0.497
Suppose you pay $3.00 to roll a fair die with the understanding that you will get back $5.00 for rolling a 1 or a 6, nothing otherwise.
What is your expected value?
$3.00
$3.00
$1.33
$5.00
Determine whether the given procedure results in a binomial distribution. If not, state the reason why.
Choosing 10 marbles from a box of 40 marbles (20 purple, 12 red, and 8 green) one at a time with replacement, keeping track of the number of red marbles chosen.
Not binomial: there are more than two outcomes for each trial.
Procedure results in a binomial distribution.
Not binomial: the trials are not independent.
Not binomial: there are too many trials.
Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial. Round to three decimal places.
n = 4, x = 3, p = 1/6
0.015
0.023
0.012
0.004
Use the Poisson model to approximate the probability. Round your answer to four decimal places.
The probability that a call received by a certain switchboard will be a wrong number is XXXXX Use the Poisson distribution to approximate the probability that among 140 calls received by the switchboard, there are no wrong numbers.
0.0608
0.1703
0.9392
0.8297
0.0669
Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correlation. Use a significance level of 0.05.
r = 0.843, n = 5
Critical values: r = ±0.878, significant linear correlation
Critical values: r = ±0.950, no significant linear correlation
Critical values: r = 0.950, significant linear correlation
Critical values: r = ±0.878, no significant linear correlation
f z is a standard normal variable, find the probability.
The probability that z is greater than 1.82
0.4656
0.9656
0.0344
0.0344
A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If 40 different applicants are randomly selected, find the probability that their mean is above 215.
0.0287
0.1179
0.4713
0.3821
The given values are discrete. Use the continuity correction and describe the region of the normal distribution that corresponds to the indicated probability.
The probability of no more than 75 defective CD's
The area to the right of 75.5
The area to the left of 75
The area to the left of 74.5
The area to the left of 75.5
Use the normal distribution to approximate the desired probability.
Find the probability that in 200 tosses of a fair die, we will obtain at most 30 fives.
0.1871
0.4936
0.2946
0.3229
Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of error to four decimal places.
In a random sample of 184 college students, 97 had parttime jobs. Find the margin of error for the 95% confidence interval used to estimate the population proportion.
0.0721
0.00266
0.126
0.0649
Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. n = 125, x = 72; 90% confidence
Submitted:
3 years ago.
Category:
Calculus and Above
Share this conversation
Expert:
Stevewh
replied 3 years ago.
Hi,
When do you need them ?
Steve
Ask Your Own Calculus and Above Question
Customer:
replied 3 years ago.
hi
Now if possible
Expert:
Stevewh
replied 3 years ago.
Here are the answers:
Find the mean for the given sample data. Unless indicated otherwise, round your answer to one more decimal place than is present in the original data values.
The students in Hugh Logan's math class took the Scholastic Aptitude Test. Their math scores are s hown below.
Find the mean score. 536/357 608/343 344/566 340/470 596/482
a)464.2
b)476.0
C)473.7
d)455.1
Find the midrange for the given sample data.
Listed below are the amounts of time (in months) that the employees of an electronics company have been working at the company.
Find the midrange. 12 21 26 37 4 53 61 66 75 76 85 91 132 155
Can you check the data please ?
a) 63.5 months
b)71.5 months
c)66.9 months
d)83.5 months
Find the standard deviation for the given sample data. Round your answer to one more decimal place than is present
in the original data. 20.0 21.5 27.4 47.3 13.1 11.1
a)4145.12
b) 37.34
c)13.11
d)3285.46
Find the indicated probability.
A bag contains 5 red marbles, 3 blue marbles, and 1 green marble. Find P(not blue).
a)1/3
b)3/2
c)6
d)2/3
Find the indicated probability. Round to the nearest thousandth.
In a blood testing procedure, blood samples from 6 people are combined into one mixture. The mixture will only test negative if all the individual samples are negative. If the probability that an individual sample tests positive is 0.11, what is the probability that the mixture will test positive?
0.00000177
1.000
0.503
0.497
Suppose you pay $3.00 to roll a fair die with the understanding that you will get back $5.00 for rolling a 1 or a 6, nothing otherwise.
What is your expected value?
$3.00
$3.00
$1.33
$5.00
Determine whether the given procedure results in a binomial distribution. If not, state the reason why.
Choosing 10 marbles from a box of 40 marbles (20 purple, 12 red, and 8 green) one at a time with replacement, keeping track of the number of red marbles chosen.
Not binomial: there are more than two outcomes for each trial.
Procedure results in a binomial distribution.
Not binomial: the trials are not independent.
Not binomial: there are too many trials.
Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial. Round to three decimal places.
n = 4, x = 3, p = 1/6
0.015
0.023
0.012
0.004
Use the Poisson model to approximate the probability. Round your answer to four decimal places.
The probability that a call received by a certain switchboard will be a wrong number is XXXXX Use the Poisson distribution to approximate the probability that among 140 calls received by the switchboard, there are no wrong numbers.
0.0608
0.1703
0.9392
0.8297
0.0669
Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correlation. Use a significance level of 0.05.
r = 0.843, n = 5
Critical values: r = ±0.878, significant linear correlation
Critical values: r = ±0.950, no significant linear correlation
Critical values: r = 0.950, significant linear correlation
Critical values: r = ±0.878, no significant linear correlation
f z is a standard normal variable, find the probability.
The probability that z is greater than 1.82
0.4656
0.9656
0.0344
0.0344
A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If 40 different applicants are randomly selected, find the probability that their mean is above 215.
0.0287
0.1179
0.4713
0.3821
The given values are discrete. Use the continuity correction and describe the region of the normal distribution that corresponds to the indicated probability.
The probability of no more than 75 defective CD's
The area to the right of 75.5
The area to the left of 75
The area to the left of 74.5
The area to the left of 75.5
Use the normal distribution to approximate the desired probability.
Find the probability that in 200 tosses of a fair die, we will obtain at most 30 fives.
0.1871
0.4936
0.2946
0.3229
Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of error to four decimal places.
In a random sample of 184 college students, 97 had parttime jobs. Find the margin of error for the 95% confidence interval used to estimate the population proportion.
0.0721
0.00266
0.126
0.0649
Bonus is so welcome
Thanks
Steve
Ask Your Own Calculus and Above Question
Customer:
replied 3 years ago.
Data for # XXXXX is Find the midrange for the given sample data.
Listed below are the amounts of time (in months) that the employees of an electronics company have been working at the company. Find the midrange. 12 21 26 37 46 53 61 66 75 76 85 91 132 155
_ Thanks
Expert:
Stevewh
replied 3 years ago.
Ok,
Answer is:
a) 63.5 months
b)71.5 months
c)66.9 months
d)83.5 months
Bonus is welcome
Thanks
Steve
Ask Your Own Calculus and Above Question
Customer:
replied 3 years ago.
Can you please help me with 5 more questions
Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.
n = 125, x = 72; 90% confidence
0.507 < p < 0.645
0.503 < p < 0.649
0.506 < p < 0.646
0.502 < p < 0.650
Solve the problem. Round the point estimate to the nearest thousandth.
50 people are selected randomly from a certain population and it is found that 13 people in the sample are over 6 feet tall. What is the point estimate of the proportion of people in the population who are over 6 feet tall?
0.50
0.26
0.19
0.74
Use the confidence level and sample data to find a confidence interval for estimating the population (mu). Round your answer to the same number of decimal places as the sample mean.
A random sample of 130 fullgrown lobsters had a mean weight of 21 ounces and a standard deviation of 3.0 ounces. Construct a 98% confidence interval for the population mean mu.
21 oz < mu < 23 oz
20 oz < mu < 22 oz
20 oz < mu < 23 oz
19 oz < mu < 21 oz
Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis.
a= 0.05 for a lefttailed test.
1.96
±1.96
±1.645
1.645
Use the given information to find the Pvalue. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesis).
The test statistic in a righttailed test is z = 1.43. (Points : 4)
0.1528; fail to reject the null hypothesis
0.1528; reject the null hypothesis
0.0764; fail to reject the null hypothesis
0.0764; reject the null hypothesis
Expert:
Stevewh
replied 3 years ago.
Ok,
I am working on them now
Steve
Ask Your Own Calculus and Above Question
Expert:
Stevewh
replied 3 years ago.
Here are the answers
Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p.
n = 125, x = 72; 90% confidence
0.507 < p < 0.645
0.503 < p < 0.649
0.506 < p < 0.646
0.502 < p < 0.650
Solve the problem. Round the point estimate to the nearest thousandth.
50 people are selected randomly from a certain population and it is found that 13 people in the sample are over 6 feet tall. What is the point estimate of the proportion of people in the population who are over 6 feet tall?
0.50
0.26
0.19
0.74
Use the confidence level and sample data to find a confidence interval for estimating the population (mu). Round your answer to the same number of decimal places as the sample mean.
A random sample of 130 fullgrown lobsters had a mean weight of 21 ounces and a standard deviation of 3.0 ounces. Construct a 98% confidence interval for the population mean mu.
21 oz < mu < 23 oz
20 oz < mu < 22 oz
20 oz < mu < 23 oz
19 oz < mu < 21 oz
Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis.
a= 0.05 for a lefttailed test.
1.96
±1.96
±1.645
1.645
Use the given information to find the Pvalue. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesis).
The test statistic in a righttailed test is z = 1.43. (Points : 4)
0.1528; fail to reject the null hypothesis
0.1528; reject the null hypothesis
0.0764; fail to reject the null hypothesis
0.0764; reject the null hypothesis
Bonus is welcome
Thanks
Steve
Stevewh, Bachelor's Degree
Category:
Calculus and Above
Satisfied Customers:
7610
Experience:
I teach Calculus and Probability in an University since 1994
Stevewh and other Calculus and Above Specialists are ready to help you
Ask your own question now
Customer:
replied 3 years ago.
Thank you !!
Expert:
Stevewh
replied 3 years ago.
Thank you too
Next time if you find me online just put "For Steve" and i will reply inmediately
Steve
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
<
Previous

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:
102
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:
102
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:
98
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:
64
Innercity high school substitute teacher. Degrees in mathemetics, accounting, and education. Years and years of tutoring.
http://ww2.justanswer.com/uploads/AR/arubin9/201224_42617_ArthurRubinedit.64x64.jpg
Dr Arthur Rubin's Avatar
Dr Arthur Rubin
Doctoral Degree
Satisfied Customers:
58
Ph.D. in Mathematics, 1978, from the California Institute of Technology, over 20 published papers
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/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
1. When one thinks of the normal distribution, the first
2/10/2016
2/10/2016
Mr. Glenn
How many ways can a person toss a coin 15 times so that the
2/9/2016
2/9/2016
Mr. Glenn
A study wants to examine the relationship between student
2/9/2016
2/9/2016
Mr. Glenn
Greetings Ryan, I have a Statistics test due today by 11:55
2/7/2016
2/8/2016
Ryan
1. Suppose that an object is projected in such a way that
2/6/2016
2/6/2016
Ryan
1. Find the slope of the line having x intercept: 3 and
2/6/2016
2/6/2016
Mr. Glenn
Hi, my name is ***** *****. I am having a problem with a multiple
2/1/2016
2/1/2016
Mr. Glenn
i need help with my homework <br>JA: Thanks. Can you give me
2/1/2016
2/1/2016
Ryan
Hello I am doing Discrete Structures and Algorithms and I
1/31/2016
1/31/2016
Ryan
Hi Ryan, An exercise question....
1/31/2016
1/31/2016
Ryan
X
Ask a Tutor
Get a Professional Answer. 100% Satisfaction Guaranteed.
43 Tutors are Online Now
Type Your Calculus and Above Question Here...
characters left: