The operations manager of a company that manufactures shirts wants to determine whether there are differences in the quality of workmanship among the three daily
The operations manager of a company that manufactures shirts wants to determine whether there are differences in the quality of workmanship among the three daily shifts. She randomly selects 600 recently made shirts and carefully inspects them. Each shirt is classified as either perfect or flawed, and the shift that produced it is also recorded. The accompanying table summarizes the number of shirts that fell into each cell. Do these data provide sufficient evidence to infer that there are differences in quality between the threeshifts?
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Shirt Condition 1 Perfect Flawed Shift 2 191 9 3 240 10 139
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H 0 The two variables shirt condition and shift are independent H 1 The two variabl... View full answer
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Authors: Gerald Keller
10th Edition
978-1-305-0821, 1285869648, 1-305-08219-2, 978-1285869643
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