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5. A sample of 200 people reveals that 123 of them prefer showers to baths. (a) What is the sample proportion p of people who

5. A sample of 200 people reveals that 123 of them prefer showers to baths. (a) What is the sample proportion p of people who prefer showers to baths? (b) Find a 99% confidence interval for the population proportion of people who prefer showers to baths.

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