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It is claimed that in a bushel of peaches, less than 10% are defective. A sample of 400 peaches is examined and 50 are found

It is claimed that in a bushel of peaches, less than 10% are defective. A sample of 400 peaches is examined and 50 are found to be defective. What is thez-test statistic?

Select one:

a. +0.125

b. +0.278

c. -1.645

d. +1.667

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