SOLUTION: The principal of a middle school claims that annual incomes of the families of the seventh-graders at his school vary more than the annual incomes of the families of the seventh-gr

Question 1009690: The principal of a middle school claims that annual incomes of the families of the seventh-graders at his school vary more than the annual incomes of the families of the seventh-graders at a neighboring school, which have variation described by s = $13,700. Assume that a hypothesis test of the claim has been conducted and that the conclusion of the test was to reject the null hypothesis. Identify the population to which the results of the test apply.
A. The current seventh graders at the principal�s school
B. Seventh graders� families at the school with a standard deviation of $13,700
C. All of the families of the class of seventh graders at the principal�s school
D. All seventh graders� families
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The principal of a middle school claims that annual incomes of the families of the seventh-graders at his school vary more than the annual incomes of the families of the seventh-graders at a neighboring school, which have variation described by s = $13,700. Assume that a hypothesis test of the claim has been conducted and that the conclusion of the test was to reject the null hypothesis. Identify the population to which the results of the test apply.
=======
Ho: u1-u2 = 0
Ha: u1-u2 # 0 (claim)
-------------------------
Ans:: C
Cheers,
Stan H.
----------
A. The current seventh graders at the principal�s school
B. Seventh graders� families at the school with a standard deviation of $13,700
C. All of the families of the class of seventh graders at the principal�s school
D. All seventh graders� families
RELATED QUESTIONS
The principal of a middle school claims that annual incomes of the families of the... (answered by deepakthorat)

THE PRINCIPAL OF A MIDDLE SCHOOL CLAIMS THAT TEST SCORES OF THE SEVENTH GRADERS AT HIS... (answered by stanbon)

At a middle school, 38% of all seventh graders have taken swimming lessons. There are 250 (answered by mathybrain)

Mrs. Donovan is the coach of a middle school golf team that has 10 golfers. There are 4... (answered by ikleyn)

Mrs. Donovan is the coach of a middle school golf team that has 10 golfers. There are 2... (answered by ikleyn)

Mrs. Donovan is the coach of a middle school golf team that has 10 golfers. There are 2... (answered by edjones)

1. There are 100 eighth graders enrolled at Mesa Middle School. Principal Owens would... (answered by Edwin McCravy)

I'm having trouble with this problem 30% of the seventh-graders and 40% of the... (answered by ikleyn)

Suppose that 6% of the eighth graders and 3% of the seventh grades at Washington Junior... (answered by JoelSchwartz)