Question
The life in hours of a 75-watt light bulb is known to be normally distributed with= 25 hours. A random sample of 20 bulbs has
The life in hours of a 75-watt light bulb is known to be normally distributed with= 25 hours. A random sample of 20 bulbs has a mean life of1014hours. Determine the lower limit of the 99% confidence interval on the mean life.
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Geometric Problems On Maxima And Minima
Authors: Titu Andreescu ,Luchezar Stoyanovoleg Mushkarov
2006th Edition
0817635173, 978-0817635176
