2) Suppose Nancy has classes three days a week. She attends classes three days a
week 80% of the time, two days 15% of the time, one day 4% of the time, and no
days 1% of the time.
Suppose one week is randomly selected.
a. Let X = the number of days Nancy _____
b. X takes on what values?
c. Suppose one week is randomly chosen. Construct a probability distribution table
(called a PDF table). The table should have two columns labeled x and P(x). What
does the P(x) column sum to?
