<PRE><B>Question 934901</B>
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 &lt; u &lt; 32.6+0.44
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Cheers,
Stan H.
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