The manufacturer of the X-15 steel-belted redial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles. Crosset Truck Company bought a sample of 48 tires and found that the mean mileage for its trucks is 59,000 miles (i.e. less than the manufacturer’s claim) with a standard deviation of 5,000 miles.Test the manufacturer’s claim at a significance level (α) equals 5%.Would your answer in (1) change if significance level become 10%? Would your answer in (1) change if the probability of type I error equals zero? Justify your answerIf the same sample results had been obtained from a random sample of 125 tires, could your decision about the manufacturer’s claim changed using α=0.01 and comment on the results.Based on the sample size in (4), construct a 95% confidence level for the mean of mileage and comment on the results. The manufacturer of the X-15 steel-belted redial truck tire claimsthat the mean mileage the tire can be driven before the tread wearsout is 60,000 miles. Crosset Truck Company bought a sample of 48tires and found that the mean mileage for its trucks is 59,000 miles(i.e. less than the manufacturer's claim) with a standard deviation of5,000 miles.1. Test the manufacturer's claim at a significance level (a) equals5%.2. Would your answer in (1) change if significance level become10%?3. Would your answer in (1) change if the probability of type I errorequals zero? Justify your answer4. If the same sample results had been obtained from a randomsample of 125 tires, could your decision about the manufacturer'sclaim changed using a=0.01 and comment on the results.5. Based on the sample size in (4), construct a 95% confidence levelforthemeanofmileageandcommentontheresults. The manufacturer of the X-15 steel-belted redial truck tire claimsthat the mean mileage the tire can be driven before the tread wearsout is 60,000 miles. Crosset Truck Company bought a sample of 48tires and found that the mean mileage for its trucks is 59,000 miles(i.e. less than the manufacturer's claim) with a standard deviation of5,000 miles.1. Test the manufacturer's claim at a significance level (a) equals5%.2. Would your answer in (1) change if significance level become10%?3. Would your answer in (1) change if the probability of type I errorequals zero? Justify your answer4. If the same sample results had been obtained from a randomsample of 125 tires, could your decision about the manufacturer'sclaim changed using a=0.01 and comment on the results.5. Based on the sample size in (4), construct a 95% confidence levelforthemeanofmileageandcommentontheresults.

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Description: The manufacturer of the X-15 steel-belted redial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles. Crosset Truck Company bought a sample of 48 tires and found that the mean mileage for its truc

Given, Test the claim : Manufacturer claim that the mean milage of the tire can be driven before…

Answered: he manufacturer of the X-15…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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The manufacturer of the X-15 steel-belted redial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles. Crosset Truck Company bought a sample of 48 tires and found that the mean mileage for its trucks is 59,000 miles (i.e. less than the manufacturer’s claim) with a standard deviation of 5,000 miles.

Test the manufacturer’s claim at a significance level (α) equals 5%.
Would your answer in (1) change if significance level become 10%?
Would your answer in (1) change if the probability of type I error equals zero? Justify your answer
If the same sample results had been obtained from a random sample of 125 tires, could your decision about the manufacturer’s claim changed using α=0.01 and comment on the results.
Based on the sample size in (4), construct a 95% confidence level for the mean of mileage and comment on the results.

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