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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

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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