Lightbulb Life A sample of 6 lightbulbs was chosen and their lifetimes measured. The
Chapter 9, Problem 15(choose chapter or problem)
Lightbulb Life A sample of 6 lightbulbs was chosen and their lifetimes measured. The bulbs lasted 968, 893, 769, 845, 922, and 915 hours. Calculate the mean and the standard deviation of the lifetimes of the lightbulbs.
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