To test whether smoking status and suffering from heart diseases are independent or not, a random sample is selected and the following data are obtained Suffer from heart disease Smoking Yes No Total status Smoker 29 41 70 Nonsmoker 11 119 130 Total 40 160 200 a) Here, the null hypothesis is Ho Sm...

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Sampling Design and Analysis

ISBN: 978-0495105275

2nd edition

Authors: Sharon L. Lohr

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To test whether smoking status and suffering from heart diseases are independent or not, a random...

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Sampling Design and Analysis

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