Use the Following Information for Following Questions

Multiple Choice

Use the following information for following questions .
The distribution of the number of hours people spend at work per day is unimodal
and symmetric with a mean of 8 hours and a standard deviation of 0.5 hours.
-If Stacy worked 8.7 hours yesterday, would you consider this unusual?

A) No, 8.7 hours is less than 2 standard deviations above the mean.
B) No, 8.7 hours is less than 1 standard deviations above the mean.
C) Yes, 8.7 hours is more than 2 standard deviations above the mean.
D) Yes, 8.7 hours is more than 1 standard deviations above the mean.