Question: a computer scanner can read a bar code on a package correctly 97% of the time. one company monitors the accuracy of the scanner by

a computer scanner can read a bar code on a package correctly 97% of the time. one company monitors the accuracy of the scanner by randomly sampling packages and verifying that each package has been correctly scanned. random samples of sizes n=25,50,100 and 200 have recently been taken with the following results

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