The braking distances (from 60 miles per hour to a complete stop on dry pavement) of a

Question:

The braking distances (from 60 miles per hour to a complete stop on dry pavement) of a sports utility vehicle are normally distributed, with a mean of 154 feet and a standard deviation of 5.12 feet. Random samples of size 12 are drawn from this population, and the mean of each sample is determined.

Use the Central Limit Theorem to find the mean and standard deviation of the indicated sampling distribution of sample means. Then sketch a graph of the sampling distribution.

Distribution
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