Question: Suppose that the population standard deviation () for a normally distributed standardized test of achievement is known to be 7.20. What would the standard error

Suppose that the population standard deviation (σ) for a normally distributed standardized test of achievement is known to be 7.20. What would the standard error of the sample mean (σ_X̅) be if we were to draw a random sample of 16 test scores?

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Solution N 16 so X 16 sn Since n 16 the required formula is 1672072016 32 The stand... View full answer

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