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Question: test hypothesis and significance 4 the mean lifetime of a...

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TEST HYPOTHESIS AND SIGNIFICANCE 4. The mean lifetime of a sample of 100 fluorescent light bulbs produced by a company is computed to be 2000 hours with a standard deviation of 80 hours. If μ is the mean lifetime of all the bulbs produced by the company, test the hypothesis μ 1000 hours, against the alternative hypothesis #1000 hours. Use a significance level of 0.05 and find the P value of the test
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