A tire manufacturer claims that his tires last at least 1,200 miles more than hi

Question

A tire manufacturer claims that his tires last at least 1,200 miles more than his competitor's. Two independent samples of 10 tires each are subjected to wear and the average life of the company's tires is found to be 16,700 miles, with a standard deviation of 1,700 miles. The competitor's tires last a mean of 15,100 miles, with a standard deviation of 1,350 miles.

State the null hypothesis to test whether the manufacturer's claim is true. Assume that the manufacturer's tires are population 1 and the competitor's tires are population 2.

H0: 1 - 2 1,200

H0: 1 - 2 1,200

H0: 1 - 2 = 1,200

H0: 1 - 2 1,000

H0: 1 - 2 900

H0: 1 - 2 1,200

H0: 1 - 2 1,200

H0: 1 - 2 = 1,200

H0: 1 - 2 1,000

H0: 1 - 2 900

Explanation / Answer

Here manufacturer claims that his tire is alteast 1200 more miles than competitors

so he wants to claim that mu1>=mu2

so H0: mui>=mu>2 so that makes H0:mu1-mu2>=1200

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.