Answer:
3) One-sided,compare two populations
Step-by-step explanation:
A manufacturer wants to investigate the whether there is an increase in the mean gas mileage of mid-sized sedan having new type of tire compared to mean gas mileage of mid-sized sedan not having new type of tire.
So, there are two populations :
population 1 : mid-sized sedan having new type of tire.
population 2 : mid-sized sedan not having new type of tire.
So, two populations are being compared.
Also, A manufacturer is investigating whether there is an increase in mean gas mileage.The alternative hypothesis will be right tailed and so, this corresponds to one sided test.
Answer :
Length of rectangle = 14m
Width of rectangle = 12m
Explanation :
p = 2l + 2w = 68
l = w + 2
Substitute:
68 = 2(w + 2) + 2w
68 = 2w + 4 + 2w
4w = 64
w = 16
l = 18
I hope this helped out, have a nice day! :D
(P.s. Both taken from source)
Answer:
-5
Step-by-step explanation:

Using the formula for the volume of a pyramid, we get <span>29166 2/3 units. Hope this helps!</span>
Answer:
The maximum width of the pool must be 38 ft
Step-by-step explanation:
Let
y -----> the length of the swimming pool
x ----> the width of the swimming pool
The perimeter of the swimming pool is

we have

substitute


Remember that
The perimeter of the pool must be no more than 120 feet
so
The inequality that represent this scenario is

Solve for x



therefore
The maximum width of the pool must be 38 ft