A marketing executive is comparing the average weekly sales revenue using two di

Question

A marketing executive is comparing the average weekly sales revenue using two different advertising media, television (T) and Internet (I). Weekly sales revenue (in dollars) was compiled for random samples from each media. Assuming that the variances for the two populations of media revenues are equal, use the Excel output below to identify whether each of the following conclusions is correct.

You must make a selection for each option. Click once to place a check mark for correct answers and click twice to place an "x" for the wrong answers.

____________________________________________________________________________

Hypothesis Test: Independent Groups (t-test, pooled variance)

At the 10% significance level, conclude that the mean weekly sales revenue generated by Internet advertising exceeds that generated by television advertising. At the 2.5% significance level, conclude that the mean weekly sales revenue generated by television advertising exceeds that generated by Internet advertising. At the 1% significance level, conclude that the two advertising media generate different mean weekly sales revenues. At the 5% significance level, conclude that the two advertising media generate different mean weekly sales revenues.

Explanation / Answer

Here p - value (two - tailed) = 0.0072

so The test is two tailed so that eliminates option A and B as it uses the word " exceeds" which cannot be used in two tailed test.

As p - value = 0.0072 < 0.01 and 0.05

so Option C and D both are correct as it uses the word " Different " which is suitable for two tailed test.

SO Option A and B are incorrect and two double cross marks shall be put

Option C and D are correct.

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