Many companies use well-known celebrities as spokespersons in their TV advertise

Question

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.

Referring to Table, the degrees of freedom of the test statistic are


Male Celebrity Female Celebrity
Indentified Product 41 61
Could not indentify 109 89

Explanation / Answer

Answer: the degrees of freedom of the test statistic are (2-1)*(2-1)=1

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