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Manufacturer guaranteed that a particular type of steel cable had a mean ensile strength of 2,000 pounds with a standard deviation of 200 pounds

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Manufacturer guaranteed that a particular type of steel cable had a mean ensile strength of 2,000 pounds with a standard deviation of 200 pounds. In a shipm nt, 16 lengths of the cable were submitted to a test for breaking strength. The mean br aking strength was 1,900 pounds. Using a one-tailed test at the .05 level of significance, etermine whether the shipment met the manufacturer's specifications.