A manufacturer produces crankshafts for an automobile engine. The crankshafts wear after 100,000 miles(0.0001 inch) is of interest because it is likely to have an impact on warranty claims. A random sample ofn= 15 shafts is tested and = 2.78. It is known that o = 0.9 and that wear is normally distributed.Question 1: Parameter of interest for this testQuestion 2: Test Ho: µ = 2.5 versus H1: u + 2.5, a = 0.05Question 3: What is the power of the test if true u = 3.10Question 4: Sample size required to detect a true mean of 3.10 if we wanted the power to be at least 0.9?a. Reject Hn. There is evidence to support the claim that the mean weardiffers from 2.5 at a = 0.05Question 1Question 2b.ns 15v Question 3C.n=24Question 4d. 0.7330e. Mean wear of crankshaftsf. Fail to reject Ho- There is no sufficient evidence to support the claim thatthe mean wear of crankshafts differs from 2.5 at a = 0.05g 0.2670>

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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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