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.

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.)

Give your conclusion. Choose the correct answer below.

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

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

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

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

Magazine readership age group Model dress Young adult Mature adult Not sexual (percent) 72.4% 75.8% Sexual (percent) 27.6% 24.2% Number of ads 1000 500

Explanation / Answer

for above after applying chi distribution goodness of fit test:

here X2 =1.980

and p vlaue=0.1594

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

Observed O Young Mature Total not sexual(%) 724 379 1103 sexual(%) 276 121 397 Total 1000 500 1500 Expected E=rowtotal*column total/grand total Young Mature Total not sexual(%) 735.333 367.667 1103 sexual(%) 264.667 132.333 397 Total 1000 500 1500 chi square =(O-E)^2/E Young Mature Total not sexual(%) 0.175 0.349 0.524 sexual(%) 0.485 0.971 1.456 Total 0.660 1.320 1.980

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