Use the pennstate1 dataset on the companion website for this exercise. The data for the variable HrsSleep are responses by n = 190 students to the question, "How many hours did you sleep last night?"
a. Draw a histogram of the data for the HrsSleep variable. Describe the shape of this histogram, and comment on any other interesting features of the data.
b. Determine the five-number summary for these data.
c. What is the range of the data? What is the interquartile range?