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Confidence interval for population proportion

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Reference no: EM132847211

According to a survey with 900 males, 13% are left handed.

a. Construct a 97.5% confidence interval for population proportion of all males who are left handed.

b. If both the sample size and the number of successes are doubled, what is the effect on the width of the confidence interval, if nothing else changed?

Reference no: EM132847211

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