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Please solve Exercice 2. The following table shows the number of defective and acceptable items in samples taken both before and after a modification of

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Exercice 2. The following table shows the number of defective and acceptable items in samples taken both before and after a modification of the manufacturing process ; Defective Non-defective Before 25 424 After 15 420 Does the data prove that the modification results in a different percentage of defective items

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