The Housing and Residence Life office at Seattle University would like to learn more about the housing situations of students living off campus. They have asked you to analyze data collected in a survey of off-campus students conducted in the fall of 2014. The sample was designed to be representative of all off-campus students. Using Excel or R to complete the calculations, answer the following questions.

1. This question concerns the variable "number living together."

a. What is the average number of people living together off-campus?

b. What is the median number of people living together?

c. What is the standard deviation of the number of people living together?

d. 95% confidence interval for the average number of people living together.

e. Fully interpret the interval: what exactly does it tell you?