Mathematics, 19.12.2019 00:31 emilylittle2442
Aconsumer claims that the mean lifetime of a brand of fluorescent bulbs is less than1500 hours. she selects 25 bulbs and finds the mean lifetime to be 1480 hours with the standard deviation of 80 hours. if you were to test the consumer's claimat the 0.05 significance level, what would you conclude?
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Aconsumer claims that the mean lifetime of a brand of fluorescent bulbs is less than1500 hours. she...
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