TV Time The histogram shows the distribution of selfreported numbers of hours of watching TV per weekend for 60 eighth-grade students. This graph uses a right-hand rule: Someone who watched TV for exactly 4 hours would be in the second bin, the bin to the right of 4.
![2472_graph.png](https://secure.tutorsglobe.com/CMSImages/2472_graph.png)
a. According to the histogram, there are two possible values for the minimum number of hours of watching TV. What are they?
b. How many students watched TV for 18 or 19 hours (more than 17 hours)?
c. How many students watched TV for 7 or fewer hours?
d. What proportion of students watched TV for 6 or fewer hours?