A company with a fleet of 150 cars found that the emissions systems of 7 out of the 22 they tested failed

Yulia 2021-08-17 Answered
A company with a fleet of 150 cars found that the emissions systems of 7 out of the 22 they tested failed to meet pollution control guidelines. Is this strong evidence that more than 20% of the fleet might be out of compliance? Test an appropriate hypothesis and state your conclusion. Be sure the appropriate assumptions and conditions are satisfied before you proceed.
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Expert Answer

Roosevelt Houghton
Answered 2021-08-18 Author has 106 answers
1.H0:p=0.20
Ha:p>0.20
2. Assumed SRS. sample is less than 10% of population . (0.20)(22)<10 and (0.80)(22)>10
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