Solve the problem.
-Weights of adult females in a certain country are normally distributed with a mean of 137 lb and a standard deviation of 15 lb. A weight of 158 lb represents what percentile? Round the percentile to
The nearest tenth.
A)2.2
B)93.3
C)1.4
D)91.9

Question

Quizplus · Accepted Answer

To find the percentile, calculate the z-score: z = (158 - 137) / 15 = 1.4. Using a standard normal distribution table, a z-score of 1.4 corresponds to the 91.9th percentile.

Solve the Problem. -Weights of Adult Females in a Certain Country Are Normally