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The mean of a population of raw scores is 50

The mean of a population of raw scores is 50 (σx = 18).

(a) Using the z-table, what is the relative frequency of sample means below 46 when N = 40?

(b) What is the probability of randomly selecting a sample of 40 scores having a X below 46?

(a) Using the z-table, what is the relative frequency of sample means below 46 when N = 40?

(b) What is the probability of randomly selecting a sample of 40 scores having a X below 46?

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