Question

For a group experiment, your science class measured the fine-particulate concentrations in the air at random places around campus, and estimated a sample average of 22 μg/m3 (micrograms per cubic meter). If 144 readings were taken, and the standard deviation of the sample measurements was 4 μg/m3, you are 99.7% confident that actual concentration of fine particulates at the school is __________ .
A. 21.7 μg/m3 – 22.3 μg/m3
B. 21 μg/m3 – 23 μg/m3
C. 18 μg/m3 – 26 μg/m3
D. 21.3 μg/m3 – 22.7 μg/m3

Answer 1

@coltjoco

Answer 2

@jakashaka123

Answer 3

babe idk what μ means

Answer 4

idk but the dude sittin in front of me is smart @xgorillamasterx

Answer 5

lol okay

Answer 6

joe! answer! @xgorillamasterx

Answer 7

lol
@xgorillamasterx

Answer 8

i messaged him to help me

Answer 9

ima just guess babe

Answer 10

he just read it bc we were on break

Answer 11

lol k

Answer 12

;*

Answer 13

:*

Answer 14

<3