SCENARIO 12-9
Many companies use well-known celebrities as spokespersons in their TV advertisements.A study was conducted to determine whether brand awareness of female TV viewers and the gender of the spokesperson are independent.Each in a sample of 300 female TV viewers was asked to identify a product advertised by a celebrity spokesperson.The gender of the spokesperson and whether or not the viewer could identify the product was recorded.The numbers in each category are given below.

-Referring to Scenario 12-9,at 5% level of significance,the critical value of the test statistic is
A)3.8415
B)5.9914
C)9.4877
D)13.2767

Question

SCENARIO 12-9
Many companies use well-known celebrities as spokespersons in their TV advertisements.A study was conducted to determine whether brand awareness of female TV viewers and the gender of the spokesperson are independent.Each in a sample of 300 female TV viewers was asked to identify a product advertised by a celebrity spokesperson.The gender of the spokesperson and whether or not the viewer could identify the product was recorded.The numbers in each category are given below.
 
-Referring to Scenario 12-9,at 5% level of significance,the critical value of the test statistic is
A)3.8415 
B)5.9914 
C)9.4877 
D)13.2767

Quizplus · Accepted Answer

The critical value at a 5% level of significance for a chi-square test with one degree of freedom (which is common when comparing two proportions or testing the goodness of fit for a single categorical variable with two categories) is 3.8415.

SCENARIO 12-9 Many Companies Use Well-Known Celebrities as Spokespersons in Their TV