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A company tests its new novice product inspectors by comparing the variability i

ID: 3126971 • Letter: A

Question

A company tests its new novice product inspectors by comparing the variability in the number of defective items spotted by its novice inspectors to the variability in the number of defective items spotted by its expert product inspectors. The company wants to determine whether there is a difference in the variability of the number of defective items spotted by its novice and expert product inspectors. Given the Excel results provided above, if the company uses the .10 level of significance, the correct conclusion of this hypothesis test is: A. Since the one-tail p-value is .0955, the two-tail p-value is .1910, so the correct conclusion is to fail to reject the null hypothesis test at the .10 level of significance, there is not sufficient evidence to suggest there is a difference in the variability of the novice and expert product inspectors. B. Since the two-tail p-value is .0955, the correct conclusion is to reject the null hypothesis test at the .10 level of significance, there is sufficient evidence to suggest there is a difference in the variability of the novice and expert product inspectors. C. Since the one-tail p-value is .0955, the correct conclusion is to reject the null hypothesis test at the .10 level of significance, there is sufficient evidence to suggest there is a difference in the variability of the novice and expert product inspectors. D. None of the above.

Explanation / Answer

Sol_

P value=0.0955 (one tail)

and alpha=0.10

P < alpha. we reject the null hypothesis.

Hence Ans is C

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