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Calculate the proportion of people in the given age group

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Question: The makers of a medicated facial skin cream are interested in determining the percentage of people in a given age group who may benefit from the ointment. A random sample of 68 people results in 42 successful treatments. Give a 99% confidence interval for the proportion of people in the given age group who may be successfully treated with the facial cream.

Reference no: EM131694199

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