The scores of individual students on the ACT Exam are modeled as normally distributed with a mean of 19.6 and a standard deviation of 5.0. At Clark High, 64 seniors take the test. Assume the individual scores at this school are modeled using the same distribution as national scores. What are the expectation and variance of the sample mean score for this random sample of 64 students?
The scores of individual students on the ACT Exam are modeled as normally distributed with a mean of 19.6 and a standard deviation of 5.0. At Clark High, 64 seniors take the test. Assume the individual scores at this school are modeled using the same distribution as national scores. What are the expectation and variance of the sample mean score for this random sample of 64 students?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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