Wax-Com Electronics Inc $\alpha$ = 05,can It Be Concluded That the Sample Contradicts the Claim

question 20

Multiple Choice

Wax-com Electronics Inc.claims that a certain circuit board has a median operating life of less than 20,000 hours.A random sample of 25 such circuit boards showed 8 circuit boards failing before 20,000 hours and 17 circuit boards failing after 20,000 hours. Assume the useful life of the circuit board is not normally distributed.At $\alpha$ = .05,can it be concluded that the sample contradicts the claim of the company?

• A)Reject the null hypothesis
• B)Fail to reject the null hypothesis

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