Statistics with Probability

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    Ezra Halleck

    Do people spend more time reading articles that agree with their disposition? An antismoking group conducted a survey asking those who saw an advertisement against smoking if (1) they read headline only, (2) some detail, or (3) most of advertisement. The questionnaire asks respondents to identify themselves as heavy smokers (1), moderate smokers (2), light smokers (3) or nonsmokers (4). The result is found in the accompanying excel file (col A: type of smoker, col B: amt of advertisement read). Does how much you smoke affect how much you read of an antismoking advertisement? H0: How much of an advertisement someone reads is independent of whether they agree. Use a pvalue approach to decide whether to reject the H0 at the 5% level.

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