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Question: A special interest group asserts that 90% of all smokers began smoking before age 18. In a sample of 850 smokers, 687 began smoking before age 18.

a. Test whether the true proportion of all smokers who began smoking before age 18 is less than 90%, at the 1% level of significance.

b. Compute the observed significance of the test.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M92642109

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