The average gasoline price of one of the major oil companies has been $2.30 per gallon. Because of cost reduction measures, it is believed that there has been a significant reduction in the average price. In order to test this belief, we randomly selected a sample of 36 of the company's gas stations and determined that the average price for the stations in the sample was $2.21. Assume that the standard deviation of the population (a) is $0.17. (a) State the null and the alternative hypotheses (in dollars). (Enter != for as needed.) H₂: (b) Compute the test statistic. (Round your answer to two decimal places.) (c) What is the p-value associated with the above sample results? (Round your answer to four decimal places.) p-value= (d) Using a 0.05, test the company's claim. O Reject Ho. There is sufficient evidence that the average price has been reduced. O Do not reject Ho. There is sufficient evidence that the average price has been reduced. O Reject Ho. There is insufficient evidence that the average price has been reduced. O Do not reject Ho. There is insufficient evidence that the average price has been reduced.
The average gasoline price of one of the major oil companies has been $2.30 per gallon. Because of cost reduction measures, it is believed that there has been a significant reduction in the average price. In order to test this belief, we randomly selected a sample of 36 of the company's gas stations and determined that the average price for the stations in the sample was $2.21. Assume that the standard deviation of the population (a) is $0.17. (a) State the null and the alternative hypotheses (in dollars). (Enter != for as needed.) H₂: (b) Compute the test statistic. (Round your answer to two decimal places.) (c) What is the p-value associated with the above sample results? (Round your answer to four decimal places.) p-value= (d) Using a 0.05, test the company's claim. O Reject Ho. There is sufficient evidence that the average price has been reduced. O Do not reject Ho. There is sufficient evidence that the average price has been reduced. O Reject Ho. There is insufficient evidence that the average price has been reduced. O Do not reject Ho. There is insufficient evidence that the average price has been reduced.
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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Step 1: Information given is
Mean()=2.21
standard deviation()=0.17
sample size(n)=36
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