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Mathematics, 21.04.2020 16:38, biglue19
The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sample of 20 bulbs results in a mean life of 1014 hours. Determine the following: (a) Construct a 95% two-sided CI on the mean life. (b) Construct a 95% lower confidence bound on the mean life.
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The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviatio...
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