Answer:
c. One sided t-test
Step-by-step explanation:
One sided t test because we want to compare two means and alternative hypothesis is directional.
Answer:
Step-by-step explanation:
Given that 
We have coefficient of determination

=90.63%
This implies that nearly 91% of variation in change in dependent variable is due to the change in x.
The coefficient of determination is the square of the correlation (r) between predicted y scores and actual y scores; thus, it ranges from 0 to 1.
An R2 of 0 means that the dependent variable cannot be predicted from the independent variable.
An R2 of 1 means the dependent variable can be predicted without error from the independent variable.
Answer:
24
Step-by-step explanation:
12 miles is done in 30 minutes, so if you multiply 12 x 2 (because 30+30=60 and 60 minutes = an hour) you would get the answer of 24.
Answer:
The last one.
Step-by-step explanation:
The 1/2 slope has to be positive because the graph goes upward from the left to the right. If you plug in (3, -2), a possible point on the line, you get that 1=1, which is seemingly true.
She has extra because she only wants to make 80oz and it takes 8 and she has 30 so 30 is extra