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What is the standard deviation of the sample means

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Reference no: EM132139527

My homework question is: Based on the performance of all individuals who tested between July 1, 2014 and June 30, 2017, the GRE Verbal Reasoning scores are normally distributed with a mean of 150.05 and a standard deviation of 8.43.

(a) Consider all random samples of 36 test scores. What is the standard deviation of the sample means?

(b) What is the probability that 36 randomly selected test scores will have a mean test score that is between 150 and 155? (Round your answer to four decimal places)

Reference no: EM132139527

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