7.25 Suppose a random sample of n = 25 observa- tions is selected from a population that is normally dis- tributed with mean equal to 106 and standard deviation equal to 12. a. Give the mean and the standard deviation of the sampling distribution of the sample mean I. b. Find the probability that i exceeds 110. c. Find the probability that the sample mean deviates from the population mean u = 106 by no more than 4.

7.25 Suppose a random sample of n = 25 observa- tions is selected from a population that is normally dis- tributed with mean equal to 106 and standard deviation equal to 12. a. Give the mean and the standard deviation of the sampling distribution of the sample mean I. b. Find the probability that i exceeds 110. c. Find the probability that the sample mean deviates from the population mean u = 106 by no more than 4.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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