13th Edition
Publisher: CENGAGE L
ISBN: 9781305881884


13th Edition
Publisher: CENGAGE L
ISBN: 9781305881884


Chapter 7.5, Problem 19E
Textbook Problem

A population has a mean of 200 and a standard deviation of 50. Suppose a sample of size 100 is selected and x ¯ is used to estimate μ.

  1. a. What is the probability that the sample mean will be within ±5 of the population mean?
  2. b. What is the probability that the sample mean will be within ±10 of the population mean?

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Chapter 7 Solutions

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