A car company says that the mean gas mileage for its luxury sedan is at least 23 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 8 cars has a mean gas mileage of 21 mpg and a standard deviation of 4 mpg. At α = 0.025, test the company’s claim. Assume the population is normally distributed. Click here to view page 1 of the normal table. Click here to view page 2 of the normal table. Which sampling distribution should be used and why?- **A.** Use a t-sampling distribution because n < 30.- **B.** Use a normal sampling distribution because n > 30.- **C.** Use a normal sampling distribution because the population is normal, and σ is known.- **D.** Use a t-sampling distribution because the population is normal, and σ is unknown.- **E.** Use a t-sampling distribution because the population is normal, and σ is known.- **F.** Use a normal sampling distribution because the population is normal, and σ is unknown.

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Description: A car company says that the mean gas mileage for its luxury sedan is at least 23 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 8 cars has a mean gas mileage of 21 mpg and a standard deviation of 4 mpg. A

In the study, the population is normally distributed and the population standard deviation σ is…

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A car company says that the mean gas mileage for its luxury sedan is at least 23 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 8 cars has a mean gas mileage of 21 mpg and a standard deviation of 4 mpg At a= 0.025, test the company's claim. Assume the population is normally distributed. Click here to view the t-distribution table Click here to view page 1 of the normal table Click here to view page 2 of the normal table Which sampling distribution should be used and why? O A. Use a t-sampling distribution because n< 30. O B. Use a normal sampling distribution because n> 30. OC. Use a normal sampling distribution because the population is normal, and o is known. O D. Use a t-sampling distribution because the population is normal, and a is unknown. OE. Use a t-sampling distribution because the population is normal, and o is known. OF. Use a normal sampling distribution because the population is normal, and o is unknown.

A car company says that the mean gas mileage for its luxury sedan is at least 23 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 8 cars has a mean gas mileage of 21 mpg and a standard deviation of 4 mpg At a= 0.025, test the company's claim. Assume the population is normally distributed. Click here to view the t-distribution table Click here to view page 1 of the normal table Click here to view page 2 of the normal table Which sampling distribution should be used and why? O A. Use a t-sampling distribution because n< 30. O B. Use a normal sampling distribution because n> 30. OC. Use a normal sampling distribution because the population is normal, and o is known. O D. Use a t-sampling distribution because the population is normal, and a is unknown. OE. Use a t-sampling distribution because the population is normal, and o is known. OF. Use a normal sampling distribution because the population is normal, and o is unknown.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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 mileage of 24 mpg and a standard deviation of 2 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 page 1 of the normal table. Click here to view page 2 of the normal table. Which sampling distribution should be used and why? A. Use a normal sampling distribution because the population is normal, and o is known. B. Use a normal sampling distribution because n> 30. C. Use a t-sampling distribution because the population is normal, and o is known. D. Use a normal sampling distribution because the population is normal, and o is unknown. E. Use a t-sampling distribution because the population is normal, and o is unknown. O F. Use a t-sampling distribution because n 25 Ho: H#25 Ha: µ= 25 D. H : μ…
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