A variable of a population has a mean of μ=250 and a standard deviation of σ=42. 1) The sampling distribution of the sample mean for samples of size 49 is approximately normally distributed with mean ___ and standard deviation ____
Added by Stephanie H.
Step 1
Given that the sample size is greater than 30, according to the central limit theorem, the sample mean is equal to the population mean. Therefore, the mean of the sampling distribution of the sample mean is 250. ** Show more…
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