High-power experimental engines are being developed by the Stevens Motor Company for use in its new sports coupe. The en

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High-power experimental engines are being developed by the Stevens Motor Company for use in its new sports coupe. The en

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High-power experimental engines are being developed by the
Stevens Motor Company for use in its new sports coupe. The
engineers have calculated the maximum horsepower for the engine to
be 810HP810⁢HP. Sixteen engines are randomly selected for
horsepower testing. The sample has an average maximum HP
of 890890 with a standard deviation of 85HP85⁢HP.
Assume the population is normally distributed.
Step 1 of 2 :
Calculate a confidence interval for the average maximum HP for
the experimental engine. Use a significance level
of α=0.01α=0.01. Round your answers to two decimal
places.
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