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Estimate the proportion of all british smokers

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Reference no: EM131870394

1. By talking to 15 voters you discover that only 3 favor a certain candidate. Construct a 95% confidence interval for the proportion of all voters favoring this candidate.

2. In a random sample of 100 British smokers, 28 preferred brand X. Construct a 95% confidence interval to estimate the proportion of all British smokers who prefer X.

Reference no: EM131870394

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