## Automobile mechanics conduct diagnostic tests on 150 new cars of a particular make and model to determine the extent to which they are affec

Question

Automobile mechanics conduct diagnostic tests on 150 new cars of a particular make and model to determine the extent to which they are affected by a recent recall due to faulty catalytic converters. They find that 42 of the new cars tested do have faulty catalytic converters. The 99% confidence interval for the true proportion of new cars with faulty catalytic converters is _______.

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2021-12-29T07:39:30+00:00
2021-12-29T07:39:30+00:00 1 Answer
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## Answers ( )

Answer:99% Confidence interval: (0.185,0.375)

Step-by-step explanation:We are

given the followingin the question:Sample size, n = 150

Number of cars that have faulty catalytic converters, x = 42

99% Confidence interval:

Putting the values,we get:The 99% confidence interval for the true proportion of new cars with faulty catalytic converters is

(0.185,0.375)