A homeowner thinks she may need a new roof. Because of costs, she wants to be...
A homeowner thinks she may need a new roof. Because of costs, she wants to be sure a new roof is really needed before having the current one replaced. What is the homeowner's null hypothesis and what would be a type 1 error?
a) H0: A new roof is not needed. A type 1 error would occur if she had a new roof put when it was not needed.
b) H0: A new roof is needed. A type 1 error would occur if she did not have a new roof put on when it was needed.
c) H0: A new roof is not needed. A type 1 error would occur if she did not have a new roof put when it was needed.
d) H0: A new roof is needed. A type 1 error would occur if she had a new roof put on when it was not needed.
Homework Answers
Ho: A new roof is not needed
Ha: A new roof is needed
Type I error is the probability of rejecting a true null hypothesis, so the answer is
(a) H0: A new roof is not needed. A type 1 error would occur if she had a new roof put when it was not needed.
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