Mathematics, 15.04.2020 02:48 Fangflora3
The quality control manager at a light bulb factory needs to estimate the average life of a large shipment of light bulbs. The process standard deviation is known to be 100 hours. A random sample of 64 light bulbs indicates a sample average of 350 hours. State the null and alternate hypothesis. At the 0.05 level of significance is there evidence that the average life is different from 385 hours. At the 0.10 level of significance is there evidence that the average life is greater than 385
Answers: 2
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The quality control manager at a light bulb factory needs to estimate the average life of a large sh...
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