Question

A sample of 1700 computer chips revealed that 80% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 79% 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. 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

Step 2 of 7: Find the value of the test statistic. Round your answer to two decimal places.

Step 3 of 7: Specify if the test is one-tailed or two-tailed.

Step 4 of 7: Determine the P-value of the test statistic. Round your answer to four decimal places.

Step 5 of 7: Identify the value of the level of significance.

Step 6 of 7: Make the decision to reject or fail to reject the null hypothesis

Step 7 of 7: State the conclusion of the hypothesis test.

Answer 1