Develop a 99 confidence interval for the population, Ask an Expert

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A market survey was conducted to estimate the proportion of homemakers who would recognize the brand name of a cleanser based on the shape and color of the container. Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name.

A. Estimate the value of the population proportion.

B. Develop a 99% confidence interval for the population proportion.

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