Answer:
The correct answer is

Step-by-step explanation:
To solve the question we note that the question involves a test statistic calculation given by
Where
x₁ = Mean of sample 1
x₂ = Mean of sample 2
n₁ = Sample size of sample 1
n₂ = Sample size of sample 2
s₁ = Variance of sample 1
s₂ = Variance of sample 2
s₁ = ∑(x₁ - x₁')²/n₁, s₂ = ∑(x₂ - x₂')²/n₂
The test statistic is a variable that is derived from a given data sample and is applied in hypothesis testing. The test statistic measures the available data against the expected value from the null hypothesis
With the given data, we have

The first answer, answer A. It's easy.
Answer:
I am pretty sure you can set up a proportion.
12 games is the answer
Step-by-step explanation:
8 X
_ * __
30 45
8*45=30x
360=30x
x=12
It's true that (2, 12) is a solution of 3x-1/2 y = 0 .
It's also true that (1, 6), (3, 18), (5, 30), (9, 54), (150, 900),
and (12 million, 72 million) are also perfectly correct solutions.
Any pair of numbers where the 'y' number is six times as much as
the 'x' number is a solution to that equation.
There are an infinite number of them.
9 seconds
F(t)=0
0= -16t^2+144t
Than solve for “t”
t=0 or t=9
And 0 seconds doesn’t make sense so it is 9 seconds