Suppose that check out time at the new Target on State St. follows a Uniform distribution from 3 minutes to 10 minutes, with a mean check out time of 6.5 minutes and a standard deviation of 2 minutes.

Suppose we take a random sample of 60 customers and record the time it takes each customer to check out. What distribution would we use to find the approximate probability that the resulting sample mean is less than 7 minutes?

Uniform (3, 10)

Uniform (6.5, 2)

Normal (6.5, 2)

Normal (6.5, 0.2582)