A particular data set follows the bell-shaped pattern of a normal distribution, with a mean of 3.5 minutes and a standard deviation of 1.1 minutes.What proportion of service times will be between 3.5 and 4.6 minutes?
A)about .819
B)about .764
C)about .665
D)about .77.6
E)about .697

Question

Quizplus · Accepted Answer

The correct answer is A because the proportion of service times between 3.5 and 4.6 minutes is approximately 0.819, which is closest to choice A.

A Particular Data Set Follows the Bell-Shaped Pattern of a Normal