Mathematics, 12.08.2019 17:20 pimuang50
1) a light bulb producing company states that its lights will last an average of 1200 hours with a standard deviation of 200 hours. a sample of 100 light bulbs from the company were tested and the researcher found that the average life of each light bulb was 1050 hours. at a 95% confidence level, determine whether these light bulbs are in compliance with the company's claim.
Answers: 1
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1) a light bulb producing company states that its lights will last an average of 1200 hours with a s...
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