If the alternate hypothesis states that mu > 6, 700, what is the rejection regio

Question

If the alternate hypothesis states that mu > 6, 700, what is the rejection region for the hypothesis test? A) Both tails B) Lower C) Upper tail D) Center portion of the curve E) None of the above Use the following to answer questions 15 to 18: A national manufacturer of ball bearings is experimenting with two different processes for producing precision ball bearings. It is important that the diameters be as close as possible to an industry standard. The output from each process is sampled and the average error from the industry standard is calculated. The sample results from two populations are presented below. The researcher is interested in determining whether there is evidence that the two processes yield different average errors. Assume that the population standard deviations are equal. What is the alternate hypothesis? A) mu_A = mu_B B) mu_A notequalto mu_B C) mu_A lessthanorequalto mu_B D) mu_A > mu_B E) mu_A

Explanation / Answer

Solution : ( 14 )

Answer : ( C )

If the alternative hypothesis states that µ > 6,700, the rejection region for the hypothesis test is upper tail.

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Solution : ( 15 )

Answer : ( B )

The alternate hypothesis is Ha : µA µB

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Solution : ( 16 )

Answer : ( C )

The degrees of freedom is 12 + 14 - 2 = 24

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Solution : ( 17 )

Answer : ( D )

The critical t value at the 1% level of significance is +/- 2.797

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