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I really need help with this btw

Adams High School 1200
Jefferson High School 1500
Madison High School 1000
Lincoln High School 1300
Grant High School 1000

If Adams High and Jefferson High both lose 100 students each, Madison High's population stays the same, and both Lincoln High and Grant High gain 200 students each, what happens to the mean of the population of all 5 schools?
A) The mean increases by 40.
B) The mean decreases by 40.
C) The mean remains the same.
D) The mean increases by 200

Respuesta :


[tex] - 100 - 100 + 200 + 200 = 200 \\ 200 \div 5 = 40[/tex]
Answer is A. The mean increases by 40.

Hope this helps. - M

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