A sample of n = 25 scores is selected from a population with a mean of µ = 80 and a standard deviation of σ = 20.The standard error for the sample mean is 20.

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Quizplus · Accepted Answer

The standard error for the sample mean is given by the formula σ/√n, where σ is the population standard deviation and n is the sample size. Therefore, the standard error for this sample would be 20/√25 = 4, not 20.

A Sample of N = 25 Scores Is Selected from a Population