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StatisticsQ&A LibraryAn investigator conducts a study to investigate whether there is a difference in mean PEF in children with chronic bronchitis as compared to those without. There are 25 children without bronchitis in the sample, and they have a mean PEF of 319 with a standard deviation of 74. Construct a two-sided 95% confidence interval for the mean PEF in children without chronic bronchitis.Question

An investigator conducts a study to investigate whether there is a difference in mean PEF in children with chronic bronchitis as compared to those without. There are 25 children without bronchitis in the sample, and they have a mean PEF of 319 with a standard deviation of 74. Construct a two-sided 95% confidence interval for the mean PEF in children without chronic bronchitis.

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