Question

A physics professor reports that historically grades in her Intro to Physics course have been distributed as follows:

15% A’s, 40% B’s, 30% C’s, 8% D’s and 7% F’s.

Grades in her most recent course were distributed as follows: A = 20 students, B = 32 students, C = 38 students, D = 7 students, F = 12 students

At the 0.05 significance level, does the data provide sufficient evidence to conclude that the recent course distribu:on is different from her stated historical distribu:on?

Answer 1