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Estimate the proportion at a confidence level

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Reference no: EM132858024

PTC is a substance that has a strong bitter taste for some people and is tasteless for others, depending solely on the taster's genetic makeup. According to a study conducted, 75% of Italians can taste PTC. You are interested in conducting a study of Americans to see if this is shared. Find the sample size of Americans you would need to sample to estimate the proportion at a 90% confidence level within an interval width of 4%. Assume all conditions are met.

Reference no: EM132858024

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