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

A. the following events are mutually exclusive: living in california and watching american idol. true or false b. the number of patients seen by an outpatient practice is an example of a discrete random variable. true or false c. the law of large numbers states that as the number of times an event experiment is conducted increases, the likelihood of the actual probability of an event approaching the theoretical probability decreases. true or false d. measuring the time it takes for patients to enter the operating room is an example of a continuous random variable. true or false