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Mean of peak expiratory flow for children without asthma is 306. Investigator wants to see whether children with chronic bronchitis have restricted peak expiratory flow or not. A sample of 40 kids with chronic bronchitis are examined, and their mean peak expiratory flow is 279. Standard deviation is 7.1. Do children with chronic bronchitis have lower expiratory flow ? Alpha = 0.05. What is the null and alternate hypothesis? What is the test statistic?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9989920

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