It is known that the normal distribution of IQ scores has the population mean of 100 and the population variance of 15. Your sample has 60 people with a sample mean of 99. What is the z-score for your sample mean?

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05-03-2020
Mathematics

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It is known that the normal distribution of IQ scores has the population mean of 100 and the population variance of 15. Your sample has 60 people with a sample mean of 99. What is the z-score for your sample mean?

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marc123456 marc123456 · Answer 1 · 2020-03-10T19:06:59+01:00

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