# Question

The time that a randomly selected individual waits for an elevator in an office building has a uniform distribution over the interval from 0 to 1 minute. For this distribution m 5 0.5 and s 5 0.289.

a. Let x be the sample mean waiting time for a random sample of 16 individuals. What are the mean and standard deviation of the sampling distribution of x?

b. Answer Part (a) for a random sample of 50 individuals. Draw a picture of a good approximation to the sampling distribution of x when n = 50.

a. Let x be the sample mean waiting time for a random sample of 16 individuals. What are the mean and standard deviation of the sampling distribution of x?

b. Answer Part (a) for a random sample of 50 individuals. Draw a picture of a good approximation to the sampling distribution of x when n = 50.

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