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7-39. A normal population has mean 100 and variance 25. How large must the random sample
Chapter 7, Problem 7-39(choose chapter or problem)
QUESTION:
7-39. A normal population has mean 100 and variance 25. How large must the random sample be if we want the standard error of the sample average to be 1.5?
Questions & Answers
QUESTION:
7-39. A normal population has mean 100 and variance 25. How large must the random sample be if we want the standard error of the sample average to be 1.5?
ANSWER:Step 1 of 2
Given information:
Mean of the population,
Variance of the population,
Standard error of sample means;