9.40 A large firm made up of several companies has instituted a new quality-control inspection policy. Among
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9.40 A large firm made up of several companies has instituted a new quality-control inspection policy.
Among 30 artisans sampled in Company A, only 5 objected to the new policy. Among 35 artisans sampled in Company B, 10 objected to the policy.
Estimate the true difference between the proportions voicing objection to the new policy for the two companies, with a confidence coefficient 0.98.
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Related Book For 
Probability And Statistics For Engineers
ISBN: 9781133006909
5th Edition
Authors: Richard L Scheaffer, Madhuri Mulekar, James T McClave, Cecie Starr
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