Mathematics, 07.11.2019 05:31 Dweath50
The life in hours of a 75-watt light bulb is known to be approximately normally distributed, with standard deviation of 25 hours. a random sample of 62 light bulbs has a mean life of 1014 hours. construct a 98% confidence interval around the true population mean life of the light bulb.
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The life in hours of a 75-watt light bulb is known to be approximately normally distributed, with st...
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