Question

Tire King offers a 50,000 mile guarantee on its new premium tire. The warrenty department requires that the average life of the tire must be more than 55,000 before they will sign off on this tire.QA randomly selects a batch of tires and life tests them.  Write the hypothesis statement that is best suited for this test.  

Bill's Burger Shack requires that the average weight of the standard 1/4 lb burgers purchased from their vendor is 4 ounces. QA randomly selects a batch of burgers and weighs them. Write the hypothesis statement that is best suited for this test.  

Answer 1

(1) Here, QA wants that the tires be more than 55,000...Anything equal to or lesser than 55,000 is not acceptable.

Therefore the Hypothesis is

H0:

Ha:

This is a right tailed test

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(2) Here QA wants that the weight of the burger should be equal to 4 ounces. Anything more or less is not acceptable.

Therefore the Hypothesis is

H0:

Ha:

This is a 2 tailed test

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