The lifespan of xenon metal halide arc-discharge bulbs for aircraft landing lights is normally distributed with a mean of 2,400 hours an a standard deviation of 570 hours. (a) If a new ballast system shows a mean life of 2,826 hours in a test on a sample of 9 prototype new bulbs, would you conclude that the new lamp's mean life exceeds the current mean life at a = 0.01? Yes No (b) What is the p-value? (Round your answer to 4 decimal places.) p-value

MATLAB: An Introduction with Applications
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The lifespan of xenon metal halide arc-discharge bulbs for aircraft landing lights is normally distributed with a mean of 2,400 hours and
a standard deviation of 570 hours.
(a) If a new ballast system shows a mean life of 2,826 hours in a test on a sample of 9 prototype new bulbs, would you conclude that
the new lamp's mean life exceeds the current mean life at a = 0.01?
Yes
No
(b) What is the p-value? (Round your answer to 4 decimal places.)
p-value
Transcribed Image Text:The lifespan of xenon metal halide arc-discharge bulbs for aircraft landing lights is normally distributed with a mean of 2,400 hours and a standard deviation of 570 hours. (a) If a new ballast system shows a mean life of 2,826 hours in a test on a sample of 9 prototype new bulbs, would you conclude that the new lamp's mean life exceeds the current mean life at a = 0.01? Yes No (b) What is the p-value? (Round your answer to 4 decimal places.) p-value
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