A simple random sample of 30 items resulted in a sample mean of 15. The population standard deviation is o-5. Round your answers to two decimalplaces.a. What is the standard error of the mean, oy?b. At 95% confidence, what is the margin of error?

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Answered: A simple random sample of 30 items…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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A simple random sample of 30 items resulted in a sample mean of 15. The population standard deviation is o-5. Round your answers to two decimal places. a. What is the standard error of the mean, oy? b. At 95% confidence, what is the margin of error?