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 find that a random sample of 7 cars has a mean gas mileage of 23 mpg and 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 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 becausen<30. O B. Use a normal sampling distribution because the population is normal, and o is known O C. Use a normal sampling distribution because n> 30. O D. Use a normal sampling distribution because the population is normal, and o is unknown. O E. Use a t-sampling distribution because the population is normal, and o is known. OF. Use a t-sampling distribution because the population is normal, and o is unknown. State the appropriate hypotheses to test. O A. H, u#24 H, p=24 ОВ. Н, и224 H, p<24 O D. H, u= 24 OC. Ho us24 H, u> 24 H, p#24 What is the value of the standardized test statistic? The standardized test statistic is |. (Round to two decimal places as needed.)
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 find that a random sample of 7 cars has a mean gas mileage of 23 mpg and 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 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 becausen<30. O B. Use a normal sampling distribution because the population is normal, and o is known O C. Use a normal sampling distribution because n> 30. O D. Use a normal sampling distribution because the population is normal, and o is unknown. O E. Use a t-sampling distribution because the population is normal, and o is known. OF. Use a t-sampling distribution because the population is normal, and o is unknown. State the appropriate hypotheses to test. O A. H, u#24 H, p=24 ОВ. Н, и224 H, p<24 O D. H, u= 24 OC. Ho us24 H, u> 24 H, p#24 What is the value of the standardized test statistic? The standardized test statistic is |. (Round to two decimal places as needed.)
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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Transcribed Image Text: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 find that a random sample of 7 cars has a mean gas mileage of 23 mpg and
standard deviation of 5 mpg. At a= 0.05, test the company's claim. Assume the population is nomally 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 the population is normal, and o is known.
O C. Use a normal sampling distribution because n> 30.
O D. Use a normal sampling distribution because the population is normal, and o is unknown.
O E. Use a t-sampling distribution because the population is normal, and o is known.
O F. Use a t-sampling distribution because the population is normal, and o is unknown.
State the appropriate hypotheses to test
O A. H, µ+24
H p=24
O B. H, p2 24
H p<24
O C. Ho: us24
H p> 24
O D. H, p= 24
H p 24
What is the value of the standardized test statistic?
The standardized test statistic is. (Round to two decimal places as needed.)
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