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AII' mvestigator conducts a study to investigate whether there 15 a diereoce' to mean PEF' in children with chronic hmod'titis as compared to those without.

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AII' mvestigator conducts a study to investigate whether there 15 a diereoce' to mean PEF' in children with chronic hmod'titis as compared to those without. Data on PEF are collected and summarized below Based on the data, ts there statistical evidence of a lower mean PEF in diildrerl widi chronic bronchitis as compared to those without? Apply the appropriate test at a1pha=.5

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