The mean lifetime of 100 fluorescent light bulbs produced by a company is computed to be 1570 hours with a standard deviation of 120 hours. If μ is the mean lifetime of all the bulbs produced by the company, test the hypothesis μ = 1600 hours against the alternative hypothesis μ >1600 hours using a 10% level of significance.
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The mean lifetime of a sample of 100 fluorescent light bulbs produced by a company is computed to be 1570 hr with a standard deviation of 120
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