The author surveyed some of the students in one of his statistics classes about the numbers of hours they work per week. Their responses are described by the histogram shown in Fig. 86.

a. What variable is described by the histogram? Is it discrete or continuous?
b. How many of the students work between 9 and 25 hours per week?
c. How many of the students work at least 15 hours per week?
d. What proportion of the students work less than 5 hours per week?
e. Create some data that would have the histogram shown in Fig. 86.

Transcribed Image Text:

Time Spent Working per Week 4 5 10 15 20 25 30 Hours