šŸ·ļø LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION ā†’
Log in
Statistics
1
answer
0
watching
38
views

Assume that a sample is used to estimate a population mean u. Use the given confidence level and sample data to find the margin of error. Assume that the sample is a simple random sample and the population has a normal distribution. Round your answer to one more decimal place than the sample standard deviation. 95% confidence; n 91; x = 16, s 9.1 4.10 1.90 1.71 1.63 Solve the problem. corresponding to a sample size of 24 and a confidence level of Find the critical value X 95%. 38.076 11.689 13.091 35.172

Watch
1
answer
0
watching
38
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Get unlimited access
Already have an account? Log in
Share

Related textbook solutions

Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

Related questions

A simple random sample of 60 items resulted in a sample mean of 80. The population standard deviation is 15 .

a. Compute the 95% confidence interval for the population mean. Round your answers to one decimal place.
( ,  )

b. Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean. Round your answers to two decimal places.
( ,  )

c. What is the effect of a larger sample size on the interval estimate?

Larger sample provides a  margin of error.
 

A simple random sample of size n is drawn from a population that is known to be normally distributed. The sample mean,Ā xĀÆ\bar{x}Ė‰, is determined to be 104.3 and the sample standard deviation, s, is determined to be 15.9. (a) Construct the 90% confidence interval for the population mean if the sample size, n, is 15. (b) Construct the 90% confidence interval for the population mean if the sample size, n, is 25. How does increasing the sample size affect the width of the interval? (c) Construct the 95% confidence interval for the population mean if the sample size, n, is 15. Compare the results to those obtained in part (a). How does increasing the level of confidence affect the confidence interval? (d) Construct the 90% confidence interval for the population standard deviation if the sample size, n, is 15.

Ā 

1. A sample size of n=15 is a simple random sample selected from a normally distributed population. Using Table C, find the critical value t* corresponding to a 95% confidence level in the following scenarios:

a.............to construct a confidence intervalĀ 

b..............one-sided hypothesis testĀ 

c..............two-sided hypothesis test

Ā 

Ā 

Weekly leaderboard

Home
Homework Help 3,900,000
Statistics 10,000
Start filling in the gaps now
Log in