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how??? What steps do I take???? Find the z-score for the sample mean for each of the following samples obtained from a population with /

how??? What steps do I take????

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Find the z-score for the sample mean for each of the following samples obtained from a population with / = 50 and o = 12. (Hint: You'll need to repeat the steps mentioned in the hint for question 9.) a. M = 56 for a sample of n = 4 b. M = 42 for a sample of n = 9 c. M = 51 for a sample of n = 36

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