Suppose there are 250 students enrolled in Math 1105 this se…

Suppose there are 250 students enrolled in Math 1105 this semester at UMSL. You want to determine the average number of hours a typical student has studied for Exam 3 this semester. You survey 40 classmates and find that the average number of hours studied for these 40 students was 4.2.   Identify the population in this situation.

Use this set-up for Problems 26-27:   The retirement age for…

Use this set-up for Problems 26-27:   The retirement age for NFL players follows a normal distribution with a mean of 33 years and a standard deviation of 2 years.   A player gets injured and decides to retire at 28 years old. Approximately what percentage of NFL players retire at a younger age than this?