Question

Jaden surveyed 20 juniors and seniors at Denmark High School to find the number of hours per week they spend working at part- time jobs. His results are shown below. Juniors:20,10,20,10,15,0,0,10,20,15. Seniors:20,20,10,10,0,0,0,10,0,10. Which statement about the data is true?

A)the mean number of hours by the seniors surveyed is 12.
B)the mean Number of hours worked is the same for juniors and seniors
C) The range of hours worked is the same for seniors and juniors
D) The mean, median, and mode for the juniors survey fall within a three hour range

Answer 1

A) The mean number of hours by the seniors surveyed is 12.

Calculation for seniors: (20+20+10+10+0+0+0+10+0+10)/10 = 80/10 = 8

So, the statement A is false.

The correct answer is B) the mean Number of hours worked is the same for juniors and seniors.