A company is doing a hypothesis test on the variation of quality from two suppliers. They believethat one of the suppliers has a different variance than the other supplier and would like to performa hypothesis test to support their claim. Both distributions are normal, and the populations areindependent. use a = 0.01Ho :012 = 0 2 2HA: σ12 σ2.Supplier 1: standard deviation = 2.92, Sample size = 40Supplier 2: standard deviation = 4.26, Sample size = 28.The test statistic (rounded to 4 decimal places) is =The p-value (rounded to 4 decimal places) is =

Given Level of significance ɑ=0.01, n1=40, n2=28 s1=2.92, s2=4.26 Hypothesis Ho: σ12=σ22 Vs H1: σ12…

Answered: A company is doing a hypothesis test on…

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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A company is doing a hypothesis test on the variation of quality from two suppliers. They believe that one of the suppliers has a different variance than the other supplier and would like to perform a hypothesis test to support their claim. Both distributions are normal, and the populations are independent. use a = 0.01 Ho :012 = 0 2 ² HA:012 =0 2 2 Supplier 1: standard deviation = 2.82, Sample size = 35 Supplier 2: standard deviation = 3.18, Sample size = 18. The test statistic (rounded to 4 decimal places) is = The p-value (rounded to 4 decimal places) is = O Reject the null hypothesis - there is enough evidence is support a meaningful difference in the variance of the suppliers. O Fail to reject the null hypothesis - there is not enough evidence to support a meaningful difference in the variance of the suppliers.
An automobile manufacturer has given its van a 50.6 miles/gallon (MPG) rating. An independent testing firm has been contracted to test the actual MPG for this van since it is believed that the van has an incorrect manufacturer's MPG rating. After testing 220 vans, they found a mean MPG of 50.5. Assume the population variance is known to be 1.69. A level of significance of 0.01 will be used. Find the P-value of the test statistic. you may write the P-value as a range using interval notation, or as a decimal value rounded to four decimal places.

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