Mathematics: Iam so confused how am i supposed to do this

Iam so confused how am i supposed to do this

Ответ:

zyrashanson

06.01.2022

Rise over run, -2/4 or -1/2 so the slope is -1/2 or -0.5. (View picture) And the slope is negative because you are going down wards \ and the "rise" is going down.

Iam so confused how am i supposed to do this

Iam so confused how am i supposed to do this

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Ответ:

chloiesierra29

23.08.2022

Mathematics

21, 144, 12

Step-by-step explanation:

Given that a sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard deviation of 4.

Let X be the distance in yard.

i.e. each entry of x is multiplied by 3.

New mean variance std devition would be

E(3x) = 3E(x) = 21

Var (3x) = 3^2 Var(x) = 9(16) =144

Std dev (3x) = $\sqrt{144 } =12$

Thus we find mean and std devition get multiplied by 3, variance is multiplied by 9

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Iam so confused how am i supposed to do this

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