The graph shows a distribution of data. A graph shows the horizontal axis numbered 2.5 to x. The vertical axis is unnumbered. The graph shows an upward trend from 3.5 to 4 then a downward trend from 4 to 4.5. What is the variance of the data?

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.