Develop a null hypothesis and an alternative hypothesis if

Reference no: EM13619136

A major U.S. tire maker wants to review it's warranty for their rainmaker tire. The warranty covers at most 40,000 miles. The tire maker would like to conduct a hypothesis test to determine if it can be concluded that the average number of tire miles is higher than 40,000 miles. A sample of 49 tires revealed that the average number of miles is 45,000 miles. Assume the population standard deviation is 15,000 miles.

A) Develop a null hypothesis and an alternative hypothesis?

B) If conducting this hypothesis testing at the significance level of 0.05, what is the critical value for this testing that you should be using?

C) Calculate the test statistic?

D) Compare the test statistic in part c to the critical value in part b and then reach a statistical conclusion?

E) Translate the statistical conclusion in part d into a business decision?

Reference no: EM13619136

Questions Cloud

A baseball pitcher throws a 145 g baseball parallel to the : a baseball pitcher throws a 145 g baseball parallel to the ground with a speed of 36.29 ms in the x direction. the

Regulation tennis balls have a mass of 575 g when dropped : regulation tennis balls have a mass of 57.5 g. when dropped from a height of 2.69 m they must rebound to a height of

Discuss what satisfying assumption 1-3 for regression : discuss what satisfying assumption 1-3 for regression inferences by the variables under consideration would mean. an

A grinding wheel is in the form of a uniform solid disk of : a grinding wheel is in the form of a uniform solid disk of radius 6.96 cm and mass 2.04 kg. it starts from rest and

Develop a null hypothesis and an alternative hypothesis if : a major u.s. tire maker wants to review its warranty for their rainmaker tire. the warranty covers at most 40000 miles.

Show the process on a p-v diagram with respect to the : a piston cylinder device initially contains steam at 200 kpa 200 degree c and 0.4 m3. at this state a linear spring is

The annual percapita consumption of fresh apples in pounds : the annual percapita consumption of fresh apples in pounds in a nearby state can be approximated by a normal

A force of 50rm n is required to stretch a certain spring : a force of 5.0rm n is required to stretch a certain spring by 1.5rm cm .a. how far must this spring be stretched for

Determine overall efficiency of the pump-motor unit and the : water is to be pumped from a dam to a storage tank 20 m above at a rate of 70 ls. the electric power needed to achieve

User Account

All Pages