Answer:
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) = 
Var (3x) = 
Std dev (3x) = 
Thus we find mean and std devition get multiplied by 3, variance is multiplied by 9
1/2, 1/5, 0.4, 0.75 from greatest to least.
Answer:
3
Step-by-step explanation:
Amplitude is the greatest distance from the mean line
-5=8m+12
-5-12=8m
-17=8m
-17/8=m
m=-2.125