a-market-researcher-wants-to-estimate-the-difference-in-proportions-of-two-brand

Question

A market researcher wants to estimate the difference in proportions of two brands' repeat customers. She requires the estimate to be within $0.04$ with $90 percent sign$ confidence and has no prior proportion estimates. What total sample size should she plan to collect?

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Answer

Answer

Answer

A market researcher wants to estimate the difference in proportions of two brands' repeat customers. She requires the estimate to be within 0.040.04 with 90%90\% confidence and has no prior proportion estimates. What total sample size should she plan to collect?

A market researcher wants to estimate the difference in proportions of two brands' repeat customers. She requires the estimate to be within $0.04$ with $90 percent sign$ confidence and has no prior proportion estimates. What total sample size should she plan to collect?