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,the degrees of freedom of the test statistic are
A)1
B)2
C)4
D)299

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,the degrees of freedom of the test statistic are
A)1 
B)2 
C)4 
D)299

Quizplus · Accepted Answer

The degrees of freedom for a t-test is n-1, where n is the sample size. In this case, the sample size is 300, so the degrees of freedom is 300-1 = 299.

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