Question: A random sample is selected from a population with m 5 80 and s 520. How large must the sample be to ensure a standard

A random sample is selected from a population with m 5 80 and s 520.

How large must the sample be to ensure a standard error of 2 points or less?

a. n $ 10

b. n $ 25

c. n $ 100

d. It is impossible to obtain a standard error of less than 2 for any sized sample

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