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1. please help QUESTION 1 . 1 POINT Suppose the number of inches of rainfall each year in a city is normally distributed. For a

1. please help

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QUESTION 1 . 1 POINT Suppose the number of inches of rainfall each year in a city is normally distributed. For a random sample of years, the confidence interval (3.9, 7.7) is generated. Find the margin of error Give just a number for your answer. For example, if you found that the margin of error was 2, you would enter 2. Provide your answer below

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