Below are the data collected from two random samples of 500 american students on the number of hours they spend in school per day (rounded to the nearest hour):

number of hours in school per day
4
5
6
7
8
sample a: number of students
70
100
125
135
70
sample b: number of students
80
90
120
125
85

meg concludes that students spend a mean of 7 hours in school each day. tara thinks the mean is 6 hours. who is correct—meg or tara? explain your answer in two or three sentences. make sure to use facts to support your answer
asap

Alright, so I copied the answer from my test, and so now I'm handing it to you.

Tara would be correct. The reason to why this is the answer is that I had to add all the “number of hours in a school per day” to get 30. Then, you would have to divide 30 by 5 (because you have five different hours for a school day) to get 6. Your mean would be 6 because mean is adding up the amount of something, then dividing it of how many numbers you added.

I hope I helped.

-Aiden A.

the answer is c. ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

mrbilldoesmath!

answer: a parabola

steps:

(x-1)(x+4)   = x(x+4) - 1(x+4) = (x^2 + 4x) - (x+4)

                = x^2 +4x -x -4   = x^2 +3x -4

which is a parabola

mrb