Question: For samples selected from a population with = 40 and = 20, what sample size is necessary to make the standard distance between

For samples selected from a population with µ = 40 and σ = 20, what sample size is necessary to make the standard distance between the sample mean and the population mean equal to 2 points?

a. n = 2

b. n = 10

c. n = 25

d. n = 100

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