Use the following
Use the provided density function to choose the best estimate for the proportion of the population found in the specified region.

-The percent of the population between 20 and 80 is closest to
A) 85%
B) 99%
C) 70%
D) 50%

Question

Use the following 
Use the provided density function to choose the best estimate for the proportion of the population found in the specified region.
 
-The percent of the population between 20 and 80 is closest to
A) 85% 
B) 99% 
C) 70% 
D) 50%

Quizplus · Accepted Answer

The range from 20 to 80 typically covers about 85% of a normal distribution, assuming a mean of 50 and a standard deviation of 15.

Use the Following