Answer:
a) 910
b) 828100
c) 144320
Step-by-step explanation:
a. ∑y
This is the sum of all values of y. So
b. (∑y)^2
This is the square of the sum, so the square of 910, that we found in the previous item.
910² = 828100
c. ∑y^2
This is the sum of the squares of each amount spent. So
Answer:
60 feet^3
Step-by-step explanation:
like you draw, cut it to two part.
the small one:
1 x 3 x 4=12 feet^3
The big one:
2 x 6 x 4=48 feet^3
So the total is:
12+48=60 feet^3
Hope it helps.
<span>Ans : a)
What is the standard deviation of this sampling distribution?
Ď /âšn
= 60/âš840
=2.0702
b)
1 standard deviation of the mean
= (1) 2.07
= 2.07
c)
272+/- 1(2.07)
(269.93, 274.07)</span>
Solution: Z= -9
Reasoning: -6 - 3 = -9
