In what ways do advertisers in magazines use sexual imagery to appeal to youth?

Question

In what ways do advertisers in magazines use sexual imagery to appeal to youth? One study classified each of 1500 full-page or larger ads as "not sexual" or "sexual," according to the amount and style of the dress of the male or female model in the ad. The ads were also classified according to the age group of the intended readership. Here is a summary of the data.

Give your conclusion.

a.Fail to reject the null hypothesis. There is not significant evidence of an association between model dress and age group.

b.Fail to reject the null hypothesis. There is significant evidence of an association between model dress and age group.   

c. Reject the null hypothesis. There is significant evidence of an association between model dress and age group

d. Reject the null hypothesis. There is not significant evidence of an association between model dress and age group.

Magazine readership age group Model dress Young adult Mature adult Not sexual (percent) 72.8% 75.6% Sexual (percent) 27.2% 24.4% Number of ads 1000 500 Perform the significance test that compares the model dress for the age groups of magazine readership. Summarize the results of your test. (Use = 0.05. Round your 2 to three decimal places and round your P-value to four decimal places.) 2 = P-value =

Explanation / Answer

applying chi square test of independence:

from above:   2 =1.349

for above degree of freedom =(row-1)*(column-1) =(2-1)*(2-1) =1

for 1 df and above test stat ; p value =0.2454

a.Fail to reject the null hypothesis. There is not significant evidence of an association between model dress and age group

Observed O young adult mature adult Total not sexual 728 378 1106 sexual 272 122 394 Total 1000 500 1500 Expected E=rowtotal*column total/grand total young adult mature adult Total not sexual 737.33 368.67 1106 sexual 262.67 131.33 394 Total 1000 500 1500 chi square =(O-E)^2/E young adult mature adult Total not sexual 0.1181 0.2363 0.354 sexual 0.3316 0.6633 0.995 Total 0.450 0.900 1.349

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