In order for the distribution of sample means to be normal, it must be based on samples of at least n = 30 scores.
43 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 expected value for the sample mean is 80.

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The Answer of In order for the distribution of sample means to be normal, it must be based on samples of at least n = 30 scores.
43 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 expected value for the sample mean is 80.

In Order for the Distribution of Sample Means to Be