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step by step results Question 3) A marketing firm would like to know the number of years of education their prospective customer base has. They

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Question 3) A marketing firm would like to know the number of years of education their prospective customer base has. They would like to be 95% confident they are accurate within 1 year. A previous study showed the standard deviation to be 1.25 years. How many customers need to be sampled? (2 Marks)

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