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A car company says that the mean gas mileage for its luxury sedan is at least 24 miles per gallon (mpg), You believe the claim
A car company says that the mean gas mileage for its luxury sedan is at least 24 miles per gallon (mpg), You believe the claim is incorrect and nd that a random sample of 7 cars has a mean gas mileage of 21 mpg and a standard deviation of 5 mpg. At a = 0.05, test the company's claim. Assume the population is normally distributed Click here to view the t-distribution table. Click here to view pg e 1 of the normal table. Click here to view pg e 2 of the normal table. Which sampling distribution should be used and why? 0 A. Use a t-sampling distribution because the population is normal. and o is unknown. 0 B. Use a normal sampling distribution because the population is normal, and o is known. 0 C. Use a normal sampling distribution because the population is normal. and o is unknown. 0 D. Use a t-sampling distribution because the population is normal, and c is known. 0 E. Use a normal sampling distribution because n > 30. O F. Use a t-sampling distribution because n 24 Ha: p=24 OC. Ho:p=24 OD. Ho:p224 H,: "#24 H,; "
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