A car company says that the mean gas mileage for its luxury sedan is at least 25 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 6 cars has a mean gas...

A car company says that the mean gas mileage for its luxury sedan is at least

miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of

cars has a mean gas mileage of

mpg and a standard deviation of

mpg. At

α=0.10,

test the company's claim. Assume the population is normally distributed.

What is the critical value?

The critical value is

enter your response here.

(Round to three decimal places as needed.)

Determine the rejection region(s). Select the correct choice below and fill in the answer box(es) within your choice.

(Round to three decimal places as needed.)

c) Find the standardized test statistic t.

Jun 09, 2022

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