1) A biology professor reports that historically grades in her introductory biology course have
been distributed as follows: 15% A's, 30% B's, 40%TC's. 10% D's, and 5% F's. Grades in her
most recent course were distributed as follows:
Grade
B
D
Frequency 89 121 7825 12
A
c
F
Test an appropriate hypothesis to decide if the professor's most recent grade distribution
matches the historical distribution. Give statistical evidence to support your conclusion