(Answered) The braking distances from 60 miles per hour to a complete

Statistics

The braking distances (from 60 miles per hour to a complete stop on dry pavement) of a car are normally distributed, with a mean of 136 feet and a standard deviation of 4.66 feet. Random samples of size 15 are drawn from this population, and the mean of each sample is determined. (Adapted from Consumer Reports)

Mean of sampling distribution:

Standard deviation of sampling distribution:

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