Mathematics, 14.06.2021 15:20 hockeyowen

A sample of 1200 computer chips revealed that 31% of the chips fail in the first 1000 hours of their use. The company's promotional literature claimed that less than 34% fail in the first 1000 hours of their use. Is there sufficient evidence at the 0.05 level to support the company's claim?

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A sample of 1200 computer chips revealed that 31% of the chips fail in the first 1000 hours of their...