A curious statistics professor of the large lecture section is wondering how many of her students arrive to class before she does. She decided to gather some data by counting number of students that are sitting in the classroom when she arrives 20 minutes prior to class on thirteen random days. The data set is: 2, 7, 18, 19, 19, 20, 20, 20, 20, 21, 21, 32, 40.
Throughly explain the random variable. Comment upon the shape, center, and spread. Supply enough information and detail to describe you completed the problem. Label and give computations. Should you draw a histogram use three classes and round your class width up to the next whole number. Round all computations to a whole number.