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9) In a sample of 160 children selected randomly from one town, it is found that 40 of them suffer from asthma. At the 0.01

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9) In a sample of 160 children selected randomly from one town, it is found that 40 of them suffer from asthma. At the 0.01 significance level, test the claim that the proportion of all children in the town who suffer from asthma is 15%. In addition construct a 99% confidence interval

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