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:
7585
Experience:
I teach Calculus and Probability in an University since 1994
14153722
Type Your Calculus and Above Question Here...
Stevewh is online now
13. If z is a standard normal variable, find the probability. The
Resolved Question:
13. If z is a standard normal variable, find the probability.
The probability that z is greater than 1.82 (Points : 4)
0.4656
0.9656
0.0344
0.0344
14. Find the value of the linear correlation coefficient r.
The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test.
W4T13 (Points : 4)
0.224
0.678
0.678
0.224
15. Solve the problem.
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. (Points : 4)
0.0287
0.1179
0.4713
0.3821
16. 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. (Points : 4)
0.1871
0.4936
0.2946
0.3229
17. 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 (Points : 4)
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
18. 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. (Points : 4)
0.0721
0.00266
0.126
0.0649
19. 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 (Points : 4)
0.507 < p < 0.645
0.503 < p < 0.649
0.506 < p < 0.646
0.502 < p < 0.650
20. Use the given data to find the minimum sample size required to estimate the population proportion.
Margin of error: 0.015; confidence level: 96%; phat and qhat unknown (Points : 4)
6669
3667
4519
4670
21. 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. (Points : 4)
21 oz < mu < 23 oz
20 oz < mu < 22 oz
20 oz < mu < 23 oz
19 oz < mu < 21 oz
22. 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.
ALPHA = 0.05 for a lefttailed test. (Points : 4)
1.96
±1.96
±1.645
1.645
23. 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? (Points : 4)
0.50
0.26
0.19
0.74
24. Find the value of the test statistic z using z = W4T29
The claim is that the proportion of accidental deaths of the elderly attributable to residential falls is more than 0.10, and the sample statistics include n = 800 deaths of the elderly with 15% of them attributable to residential falls. (Points : 4)
3.96
3.96
4.71
4.71
25. 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
Submitted:
2 years ago.
Category:
Calculus and Above
Share this conversation
Expert:
Stevewh
replied 2 years ago.
Hi,
I am working on this questions now
I will post the answers soon
Steve
Ask Your Own Calculus and Above Question
Customer:
replied 2 years ago.
ok thank you
Expert:
Stevewh
replied 2 years ago.
13. If z is a standard normal variable, find the probability.
The probability that z is greater than 1.82 (Points : 4)
0.4656
0.9656
0.0344
0.0344
14. Find the value of the linear correlation coefficient r.
The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test.
I need the paired data values to answer this question
W4T13 (Points : 4)
0.224
0.678
0.678
0.224
15. Solve the problem.
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. (Points : 4)
0.0287
0.1179
0.4713
0.3821
16. 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. (Points : 4)
0.1871
0.4936
0.2946
0.3229
17. 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 (Points : 4)
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
18. 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.
(Points : 4)
0.0721
0.00266
0.126
0.0649
19. 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 (Points : 4)
0.507 < p < 0.645
0.503 < p < 0.649
0.506 < p < 0.646
0.502 < p < 0.650
20. Use the given data to find the minimum sample size required to estimate the population proportion.
Margin of error: 0.015; confidence level: 96%; phat and qhat unknown (Points : 4)
6669
3667
4519
4670
21. 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. (Points : 4)
21 oz < mu < 23 oz
20 oz < mu < 22 oz
20 oz < mu < 23 oz
19 oz < mu < 21 oz
22. 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.
ALPHA = 0.05 for a lefttailed test. (Points : 4)
1.96
±1.96
±1.645
1.645
23. 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? (Points : 4)
0.50
0.26
0.19
0.74
24. Find the value of the test statistic z using z = W4T29
The claim is that the proportion of accidental deaths of the elderly attributable to residential falls is more than 0.10, and the sample statistics include n = 800 deaths of the elderly with 15% of them attributable to residential falls. (Points : 4)
3.96
3.96
4.71
4.71
25. 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:
7585
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
Expert:
Stevewh
replied 2 years ago.
Hi, do you have the data for question 14) ??
Do you have any doubt about my work ?
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
<
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
A. Use the comparison test to determine the convergence or
10/17/2014
10/17/2014
Ryan
I have the same questions as the student did previously. Plus
10/15/2014
10/16/2014
StatisticsExpert
A random sample of 5 accidents resulted in the following number
10/11/2014
10/11/2014
Ryan
How many social robots would need to be sampled in order to
10/11/2014
10/11/2014
Ryan
American and Japanese workers can each produce 4 cars a year.
10/11/2014
10/14/2014
manas11
Recently, the bowling scores of a certain bowler were normally
10/7/2014
10/7/2014
Ryan
Hello. I have to present a stat problem tomorrow. Can you please
10/7/2014
10/7/2014
Ashok Kumar
Create your table in Word as shown on page 578 (which I will
10/6/2014
10/7/2014
StatisticsExpert
Using case Exhiibit 21.11 on page 527 in the textbook,
10/6/2014
10/6/2014
StatisticsExpert
For Ryan..... An important application of regression analysis
9/29/2014
9/29/2014
Ryan
X
Ask a Tutor
Get a Professional Answer. 100% Satisfaction Guaranteed.
167 Tutors are Online Now
Type Your Calculus and Above Question Here...
characters left: