A (large) group of people have formed a walking club.  Among all the members of the group, the average time it takes to walk a mile is 14 minutes, with a standard deviation of 1.5 minutes.  Suppose you take an SRS of ten group members.  What is the probability that the average of the time it takes to walk a mile of the people in your sample is less than 14 minutes? (Hint:  No calculation necessary)

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A (large) group of people have formed a walking club.  Among all the members of the group, the average time it takes to walk a mile is 14 minutes, with a standard deviation of 1.5 minutes.  Suppose you take an SRS of ten group members.  What is the probability that the average of the time it takes to walk a mile of the people in your sample is less than 14 minutes? (Hint:  No calculation necessary)

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