TABLE 11-2. Many companies use well-known celebrities asspokespersons in their T

Question

TABLE 11-2. Many companies use well-known celebrities asspokespersons in their TV advertisements. A study was conducted todetermine whether brand awareness of female TV viewers and thegender of the spokesperson are independent. Each in a sample of 300female TV viewers was asked to identify a product advertised by acelebrity spokesperson. The gender of the spokesperson and whetheror not the viewer could identify the product wasrecorded.
Referring to Table 11-2, at 5% level of significance, thecritical value of the test statistic is a. 3.8415
b. 5.9914 c. 9.4877 d. 13.2767

Explanation / Answer

Here We use Chi-square test .    The test statistics = (O-E)2/E The critical value of test statistic at(rows-1)*(columns-1) = (2-1)*(2-1) = 1degrees of freedom at 5 %level of significance = 3.8415 (obtaining from Chi-squaretables ) so answer is (a) Hope this helps you

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