(Answered) If the data are pooled the 48 before scores had an average

Statistics

If the data are pooled, the 48 "before" scores had an average of 7.48 and a standard deviation of 0.652. Assume that the "before" scores of people who have not seen any pictures has an average of 7.48 and a standard deviation of 0.652. Suppose 100 people are sampled and their scores averaged together. What is the probability that the average will be between 7.4 and 7.5? Suppose 3 people are sampled and their scores averaged together. What is the probability that the average will be between 7.4 and 7.5?

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