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860jay
14.02.2020 •
Mathematics
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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Ответ:
99% Confidence interval: (0.185,0.375)
Step-by-step explanation:
We are given the following in 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)
Ответ:
160
Step-by-step explanation:
2*5 / 4^-2
PEMDAS
Exponents first
4^-2 = 1/4^2 = 1/16
Substituting this back into the equation
2*5 / 1/16
2*5 * 16
160