Answer:
Approximately Normal
Step-by-step explanation:
Since we're given a normally distributed population, the sampling distribution of the sample means will also be normally distributed, even when the sample size is small.
Answer:
I guess this is the answer hope it helps
Answer:
200 in the x-direction by -346 in the y-direction
Step-by-step explanation:
This vector lies in Quadrant IV.
The horiz. component is 400 cos (-60°) = 400(0.5) = 200, and
the vertical comp. is 400 sin (-60°) = 400(-0.866) = -346
The combination form is 200 in the x-direction by -346 in the y-direction, or (as a vector) <200, -346>
Let the width = x
the length = x+7
=> Area equation = length x width = x(x+7) = x^2 +7x = 78
=> x^2+7x -78 = 0
=> (x-6)(x+13)=0
=> x=6 or x=-13(no)
=> the width = 6 m
=> the length = 6+7= 13 m
Answer:
First find the area 72*63
A=4536
Then find the area 12*12
A=144
Then divide 4536/144
You would need 31.5 12 by 12in covers to decorate the rectangular region
As for the 6 by 6
You would need 126 album covers
As for the 9 by 9
You would need 51 covers
And as for the 15 by 15
You would need 20.6 covers