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A car company says that the mean gas mileage for its luxury sedan is at least 20 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 19 mpg and a standard deviation of 3 mpg. At a=0.10, 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? OA. Use a normal sampling distribution because the population is normal, and B. Use a t-sampling distribution because n < 30. σ is unknown. O C. Use a normal sampling distribution because n > 30. O E. Use a t-sampling distribution because the population is normal, and a is unknown. State the appropriate hypotheses to test. OA. H₂: μ≤20 H₂:μ> 20 OC. H₂:μ=20 H₂: μ*20 What is the value of the standardized test statistic? The standardized test statistic is (Round to two decimal places as needed.) What is the critical value? The critical value is What is the outcome and the conclusion of this test? (Round to three decimal places as needed.) Ho. At the 10% significance level, there is is at least 20 miles per gallon! evidence to O D. Use a t-sampling distribution because the population is normal, and o is known. O F. Use a normal sampling distribution because the population is normal, and o is known. OB. H₂: *20 H₂:μ=20 O D. H₂:² 20 H₂ μ<20 the car company's claim that the mean gas mileage for the luxury sedan

A car company says that the mean gas mileage for its luxury sedan is at least 20 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 19 mpg and a standard deviation of 3 mpg. At a=0.10, 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? OA. Use a normal sampling distribution because the population is normal, and B. Use a t-sampling distribution because n < 30. σ is unknown. O C. Use a normal sampling distribution because n > 30. O E. Use a t-sampling distribution because the population is normal, and a is unknown. State the appropriate hypotheses to test. OA. H₂: μ≤20 H₂:μ> 20 OC. H₂:μ=20 H₂: μ*20 What is the value of the standardized test statistic? The standardized test statistic is (Round to two decimal places as needed.) What is the critical value? The critical value is What is the outcome and the conclusion of this test? (Round to three decimal places as needed.) Ho. At the 10% significance level, there is is at least 20 miles per gallon! evidence to O D. Use a t-sampling distribution because the population is normal, and o is known. O F. Use a normal sampling distribution because the population is normal, and o is known. OB. H₂: *20 H₂:μ=20 O D. H₂:² 20 H₂ μ<20 the car company's claim that the mean gas mileage for the luxury sedan

MATLAB: An Introduction with Applications
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 20 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 19 mpg and a standard deviation of 3 mpg. At a = 0.10, 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 σ is unknown. O C. Use a normal sampling distribution because n > 30. O E. Use a t-sampling distribution because the population is normal, and o is unknown. State the appropriate hypotheses to test. O A. Ho: μ≤20 H₂: μ> 20 O C. H₂: μ=20 H₂:μ*20 What is the value of the standardized test statistic? The standardized test statistic is What is the critical value? The critical value is. (Round to three decimal places as needed.) What is the outcome and the conclusion of this test? (Round to two decimal places as needed.) Ho. At the 10% significance level, there is is at least 20 miles per gallon! evidence to B. Use a t-sampling distribution because n < 30. O D. Use a t-sampling distribution because the population is normal, and is known. O F. Use a normal sampling distribution because the population is normal, and o is known. B. Ho: μ#20 H₂:μ=20 D. Ho: μz 20 H₂:μ<20 the car company's claim that the mean gas mileage for the luxury sedan
Transcribed Image Text:A car company says that the mean gas mileage for its luxury sedan is at least 20 miles per gallon (mpg). You believe the claim is incorrect and find that a random sample of 5 cars has a mean gas mileage of 19 mpg and a standard deviation of 3 mpg. At a = 0.10, 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 σ is unknown. O C. Use a normal sampling distribution because n > 30. O E. Use a t-sampling distribution because the population is normal, and o is unknown. State the appropriate hypotheses to test. O A. Ho: μ≤20 H₂: μ> 20 O C. H₂: μ=20 H₂:μ*20 What is the value of the standardized test statistic? The standardized test statistic is What is the critical value? The critical value is. (Round to three decimal places as needed.) What is the outcome and the conclusion of this test? (Round to two decimal places as needed.) Ho. At the 10% significance level, there is is at least 20 miles per gallon! evidence to B. Use a t-sampling distribution because n < 30. O D. Use a t-sampling distribution because the population is normal, and is known. O F. Use a normal sampling distribution because the population is normal, and o is known. B. Ho: μ#20 H₂:μ=20 D. Ho: μz 20 H₂:μ<20 the car company's claim that the mean gas mileage for the luxury sedan
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