Question

Mr. Zuro finds the mean height of all 14 students in his statistics class to be 68.0 inches. Just as Mr. Zuro finishes explaining how to get the mean, Danielle walks in late. Danielle is 65 inches tall. What is the mean height of the 15 students in the class?

Answer 1

In a class: 14 students whose average height is 68 inches. Danielle arrives, who is 65 inches tall

New average class size of students: (14*68 + 1*65)/15=67.8inches

mean height of the 15 students in the class : 67,8inches