SOLUTION: To determine the mileage of a new model automobile, a random sample of 36 cars was tested. A sample with a mean of 32.6 mpg and a standard deviation of 1.6 mpg was obtained. Const

Algebra ->  Statistics  -> Confidence-intervals -> SOLUTION: To determine the mileage of a new model automobile, a random sample of 36 cars was tested. A sample with a mean of 32.6 mpg and a standard deviation of 1.6 mpg was obtained. Const      Log On


   

Question 934901: To determine the mileage of a new model automobile, a random sample of 36 cars was tested. A
sample with a mean of 32.6 mpg and a standard deviation of 1.6 mpg was obtained. Construct the 90%
confidence interval for the actual mean mpg of the population of this model automobile.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
To determine the mileage of a new model automobile, a random sample of 36 cars was tested. A sample with a mean of 32.6 mpg and a standard deviation of 1.6 mpg was obtained. Construct the 90% confidence interval for the actual mean mpg of the population of this model automobile.
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x-bar = 32.6
ME = 1.645*(1.6)/sqrt(36)) = 0.44
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90% CI:: 32.6-0.44 < u < 32.6+0.44
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Cheers,
Stan H.
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