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Significant difference in change of attitude

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A doctor is interested in determining whether a film about exercise makes a significant difference in 10 persons' attitudes about exercise. The results of his questionnaire are shown. A higher numerical value shows a more favorable attitude toward exercise. Is there enough evidence to support the claim at level of significance 0.05, that there was a significant difference in change of attitude? Also find the 95% confidence for the mean difference.

Before 12  11  14  9  8  6  8  5  4  7

After   13  12  10  9  8  8  7  6  5  5   

Several Independent Populations, Homogeneity of Proportions (chi-square distribution)

Reference no: EM132030662

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