A national manufacturer of unattached garages discovered that the distribution of the time for two construction workers to erect the Red Barn model is normally distributed with a mean of 32 hours and a standard deviation of 2 hours. What percent of the garages take between 32 and 34 hours to erect?
A)16.29%
B)76.71%
C)3.14%
D)34.13%

Question

Quizplus · Accepted Answer

The time between 32 and 34 hours corresponds to the area under the normal distribution curve between the mean (32 hours) and one standard deviation above the mean (34 hours). This area represents approximately 34.13% of the distribution.

A National Manufacturer of Unattached Garages Discovered That the Distribution