Question

From a recent production run of compact fluorescent (CF) bulbs, you select a random sample of 10 bulbs. Using an accelerated bulb life simulation, you find that the average life for the bulbs in the sample is 2440 hours, with a sample standard deviation of 60 hours. Use these sample results to test, at the 5% significance level, the null hypothesis that the average life for the full population— the entire production run— of bulbs is precisely 2500 hours, no more and no less. Report your conclusion and explain.


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  • CreatedJuly 16, 2015
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