B.Calculate the value of the test statistic.χ2=____ C. Use technology to determine the P-value for the test statistic. The P-value is____ D. What is the correct conclusion at the α=0.05 level of significance? Since the P-value is (greater/less) than the level of significance, (reject/do not reject) the null hypothesis. There (is/is not) sufficient evidence to conclude that the standard deviation has decreased at the 0.05 level of significance. The piston diameter of a certain hand pump is 0.6 inch. The manager determines that the diameters are normally distributed, with a mean of 0.6 inch and a standard deviation of 0.007 inch. After recalibrating the production machine, themanager randomly selects 27 pistons and determines that the standard deviation is 0.0062 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a=0.01 level of significance?

Name: B.Calculate the value of the test statistic.χ2=____ C. Use technology
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Description: B.Calculate the value of the test statistic.χ2=____ C. Use technology to determine the P-value for the test statistic. The P-value is____ D. What is the correct conclusion at the α=0.05 level of significance? Since the P-value is (greater/less)

a. The hypotheses for the test are given below: Null hypothesis: H0: σ=0.007. Alternative…

Answered: The piston diameter of a certain hand…

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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B.Calculate the value of the test statistic.

χ2=____

C. Use technology to determine the P-value for the test statistic.

The P-value is____

D. What is the correct conclusion at the α=0.05 level of significance?

Since the P-value is (greater/less) than the level of significance, (reject/do not reject) the null hypothesis. There (is/is not) sufficient evidence to conclude that the standard deviation has decreased at the 0.05 level of significance.

The piston diameter of a certain hand pump is 0.6 inch. The manager determines that the diameters are normally distributed, with a mean of 0.6 inch and a standard deviation of 0.007 inch. After recalibrating the production machine, the
manager randomly selects 27 pistons and determines that the standard deviation is 0.0062 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a=0.01 level of significance?

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