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A sample of 1200 computer chips revealed that 49% of the chips fail in the first...

A sample of 1200 computer chips revealed that 49% of the chips fail in the first 1000 hours of their use. The company's promotional literature states that 50% of the chips fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that fail is below the stated percentage. Is there enough evidence at the 0.05 level to support the manager's claim?

Step 1 of 7:

State the null and alternative hypotheses.

Math   Statistics-And-Probability   
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Answer #1

as test statistic does not fall in rejection region we cannot reject null hypothesis

we do not have evidence at 0.05 level to support the manager's claim

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