Question 208223: If a statistician wishes to determine whether there is evidence that the average family income in a community exceeds $25,000,
a. either a one tail or two tail test could be employed with equivalent results
b. a one tail test should be utilized
c. a two tail test should be utilized
d. none of the above
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! If a statistician wishes to determine whether there is evidence that the average family income in a community exceeds $25,000,
a. either a one tail or two tail test could be employed with equivalent results
b. a one tail test should be utilized
c. a two tail test should be utilized
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The alternate hypothesis always determines the type of test.
Since you are for "exceeds 25,000" the alternate will be
Ha: u > 25000
So the test will be one-tail.
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The onlyl test that is two-tail is
Ha : u is not equal to something
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Cheers,
Stan H.
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