1. Suppose that the mean score of a class of 35 students was 76. The 17 male students in the class had a mean score of 72. What was the mean score for the 18 female students?

2. The histogram below gives the length of service of members of the Department of English at a particular university. The classes, in years of service, are 0??4.9, 5??9.9, etc., and the vertical axis represents the number of faculty.

What percent of the department faculty have 10 or more years of service?