A quality expert inspects 380 items to test whether the population proportion of
ID: 3433557 • Letter: A
Question
A quality expert inspects 380 items to test whether the population proportion of defectives exceeds 0.04, using a right-tailed test at ? = 0.02.
What is the power of this test if the true proportion of defectives is ? = 0.05? (Do not round intermediate calculations. Round your answer to 4 decimal places.)
What is the power of this test if the true proportion is ? = 0.06? (Do not round intermediate calculations. Round your answer to 4 decimal places.)
What is the power of this test if true proportion of defectives is ? = 0.07? (Do not round intermediate calculations. Round your answer to 4 decimal places.)
A quality expert inspects 380 items to test whether the population proportion of defectives exceeds 0.04, using a right-tailed test at ? = 0.02.
Explanation / Answer
a) Power value = True value-hypotesised value
= 0.05-0.02 = 0.03
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b) Power value = True value-hypotesised value
=0.06-0.02 = 0.04
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c) Power value = True value-hypotesised value
=0.07-0.02 = 0.05