At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of .9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are indicated. Round to the nearest whole percent.
-Between 15.2 and 16.1 seconds
A) $50 \%$
B) $14 \%$
C) $68 \%$
D) $34 \%$

Question

Quizplus · Accepted Answer

The time interval from 15.2 to 16.1 seconds is one standard deviation above the mean in a normal distribution. Approximately 34% of the data falls between the mean and one standard deviation above the mean.

At One High School, Students Can Run the 100-Yard Dash 50%50 \%50%

At One High School, Students Can Run the 100-Yard Dash $50 \%$