Answer:
Following are the responses to the given question:
Step-by-step explanation:
For point a:
Following are the null and alternative hypotheses:
For point b:
By using the Excel we obtained the output of the 2 sample t-test that is defined in the attached file.
These point estimately are the difference among the mean for the two populations:

Answer:
J is the answer ............
Answer:
$22.40
Step-by-step explanation:
Set up the equation like this: 2.5x + 4 = 60
Then solve for x.
Answer:
equation on circle: (x-h)^2 + (y-k)^2 =r^2
(x-3)^2 + (y+2)^2 = 841
Answer: whats the queation
Step-by-step explanation: