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In: Statistics and Probability

A sample of 1200 computer chips revealed that 20% of the chips do not fail in...

A sample of 1200 computer chips revealed that 20% of the chips do not fail in the first 1000  hours of their use. The company's promotional literature states that 22% of the chips do not fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. Find the value of the test statistic. Round your answer to two decimal places.

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orchestra answered 2 years ago
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