7:38 Quizzes a The following graph shows a distribution of hours slept last night by a group of college students. Select the statement below that gives the most complete description of the graph in a way that demonstrates an understanding of how to statistically describe and interpret the distribution of a variable. 20 20 T 15 15 U 10 CODZE 5- 12 2 5 6 7 8 9 10 11 Hours of Sleep The bars go from 3 to 10, increasing in height to 7, then decreasing to 10. The tallest bar is at 7. There is a gap between three and five. The distribution is normal, with a mean of about 7 and a standard deviation of about 1. ||| 7:38 Quizzes 15- U 10 CODZE 5- a 2 3 4 5 6 7 8 9 10 11 Hours of Sleep The bars go from 3 to 10, increasing in height to 7, then decreasing to 10. The tallest bar is at 7. There is a gap between three and five. The distribution is normal, with a mean of about 7 and a standard deviation of about 1. Most students seem to be getting enough sleep at night, but some students slept more and some slept less. However, one student must have stayed up very late and got very few hours of sleep. The distribution of hours of sleep is somewhat symmetric and bell-shaped, with an outlier at 3. The typical amount of sleep is about 7 hours and overall range is 7 hours. |||