This is from a previous assignment I did not do well on and would like to understand it better.

A professor in Kinesiology think that because of the physiological difference between females and males in terms of muscle mass and strength, there would be a difference in the number of sit-ups that females and males are able to perform in 1 minute. Specifically, the professor feels that males will be able to perform more sit-ups in 1 minutes as compared to females. The professor randomly selected