The hourly production of a plastic cup company is tracked over several months and is found to be normally distributed.Given a mean of 15,630 cups and a standard deviation of 251 cups, about what percent of all hours of production should produce between 15,379 and 15,881 cups?
A)50%
B)68%
C)75%
D)95%
E)nearly 100%

Question

Quizplus · Accepted Answer

This range (15,379 to 15,881 cups) is within one standard deviation (251 cups) of the mean (15,630 cups). According to the empirical rule (68-95-99.7 rule) for a normal distribution, approximately 68% of the data falls within one standard deviation of the mean.

The Hourly Production of a Plastic Cup Company Is Tracked