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11. A survey about monthly cell phone service costs was given to 40 randomly selected Americans aged 25 - 64. Use the data to compute

11. A survey about monthly cell phone service costs was given to 40 randomly selected Americans aged 25 - 64. Use the data to compute a 95% confidence interval for the mean amount all Americans aged 25 - 64 paid for cell phone service. Click here to open this data in StatCrunch.
Round your answers to 2 decimal places.
Lower Confidence Limit =
Upper Confidence Limit =

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