Question: D Question 3 1 pts Section 7.1 An unknown distribution has a mean of 90 and a standard deviation of 20. Samples of size n

D Question 3 1 pts Section 7.1 An unknown distribution has a mean of 90 and a standard deviation of 20. Samples of size n = 25 are drawn randomly from the population. Let X" = the mean of a sample of size 25. li>
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