Test Whether He Given Claim Is Supported or Not Supported

question 39

Multiple Choice

Test whether he given claim is supported or not supported using a 0.05 significance level. Assume that the sample has been randomly selected from a population with a normal distribution.
-A manufacturer claims that the mean lifetime of its fluorescent bulbs is 1300 hours. A product tester selects 25 bulbs and finds the mean lifetime to be 1280 hours with a standard deviation of 80 hours. He claims that the mean lifetime is different from 1300 hours. Use a significance level of 0.05 to test whether the product tester's claim is supported or not supported.

• A)supported
• B)not supported

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A legal theory under which real estate acts as security for the repayment of a debt, with the lender holding an interest in the property until the mortgage is paid in full.

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