A Company Wants to Estimate,at a 95% Confidence Level,the Proportion

question 47

Short Answer

A company wants to estimate,at a 95% confidence level,the proportion of all families who own its product.A preliminary sample showed that 30.0% of the families in this sample own this company's product.The sample size that would limit the margin of error to be within 0.045 of the population proportion is:

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