Question: A study was conducted to evaluate the hypothesis that tea consumption and premenstrual syndrome are associated. A total of 212 nursing students and 72

A study was conducted to evaluate the hypothesis that tea consumption and premenstrual syndrome are associated. A total of 212 nursing students and 72 tea factory workers were given questionnaires. The prevalence of premenstrual syndrome was 0.49 among the nursing students and 0.74 among the tea factory workers. Calculate the upper bound of 95% confidence interval for the prevalence of premenstrual syndrome for tea factory workers. Express your answer to 4 decimal places.

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