[Solution] A marketing firm surveyed 1,100 people to find out how many would buy a new product being introduce by a Co. Seven hundred and seventy said they
Question: A marketing firm surveyed 1,100 people to find out how many would buy a new product being introduce by a Co. Seven hundred and seventy said they would. Use a 95% confidence level to find:
- critical value b. margin of error c. confidence interval.
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