Use the Following Information for Following Questions

Multiple Choice

Use the following information for following questions .
The distribution of the number of hours of sleep people get per night is unimodal
and symmetric with a mean of 6 hours and a standard deviation of 1.5 hours.
-If Amanda slept 9.2 hours last night, would you consider this unusual?

A) No, 9.2 hours is less than 2 standard deviations above the mean.
B) No, 9.2 hours is less than 3 standard deviations above the mean.
C) Yes, 9.2 hours is more than 2 standard deviations above the mean.
D) Yes, 9.2 hours is more than 3 standard deviations above the mean.