What hypothesis testing procedure would you use in the following situations? (a)

Question

What hypothesis testing procedure would you use in the following situations?

(a)A test classifies applicants as accepted or rejected. On the basis of data on 200 applicants, we test the hypothesis that ad placement success is not related to gender.

(b)A company manufacturers and markets automobiles in two different countries. We want to know if the gas mileage is the same for vehicles from both facilities. There are samples of 45 units from each facility.

(c)A company has three categories of marketing analysts: (1) with professional qualifications but without work experience, (2) with professional qualifications and with work experience, and (3) without professional qualifications but with work experience. A study exists that measures each analyst’s motivation level (classified as high, normal, and low). A hypothesis of no relation between analyst category and motivation to be tested.

A company has 24 salespersons. The test must evaluate whether their sales performance is unchanged or has improved after a training program. (d)

Cooper & Schindler 12th ed

Explanation / Answer

a. In this case we should use chi square test. This test ismainly used when a hypothesis result is yes or no. Alos, this test is good for group data.

b. In this case z test should be used.

c. In this situation, there are three samples and we do not know if they are from same population. Therefore, we should use independednt sample tests.

d. In this case, dependent sales test should be used. This test is perfect here as the sample size is also small.

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