A simple random sample of 60 items resulted in a sample mean of 71. The population standard deviation is 15. a. Compute

Business, Finance, Economics, Accounting, Operations Management, Computer Science, Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Algebra, Precalculus, Statistics and Probabilty, Advanced Math, Physics, Chemistry, Biology, Nursing, Psychology, Certifications, Tests, Prep, and more.
Post Reply
answerhappygod
Site Admin
Posts: 899603
Joined: Mon Aug 02, 2021 8:13 am

A simple random sample of 60 items resulted in a sample mean of 71. The population standard deviation is 15. a. Compute

Post by answerhappygod »

A simple random sample of 60 items resulted in a sample mean of71. The population standard deviation is 15.
a. Compute the 95% confidence interval for the population mean(to 1 decimal).
( , )
b. Assume that the same sample mean was obtained from a sampleof 120 items. Provide a 95% confidence interval for the populationmean (to 2 decimals).
( , )
c. What is the effect of a larger sample size on the margin oferror?
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!
Top
Post Reply

Return to “Archived Questions & Answers”