Refer to given Exercise about hours of sleep per night for college students. Draw a picture of the distribution. Indicate the locations of the three intervals found in Exercise. Use given Figure for guidance.
![2332_Graph 8.jpg](https://secure.tutorsglobe.com/CMSImages/2332_Graph%208.jpg)
Exercise
The typical amount of sleep per night for college students has a bell-shaped distribution with a mean of 7 hours and a standard deviation equal to 1.7 hours. Use the Empirical Rule to complete each sentence:
a. About 68% of college students typically sleep between and hours per night.
b. About 95% of college students typically sleep between and hours per night.
c. About 99.7% of college students typically sleep between and hours per night.