A factory manufacturing light-emitting diode (LED) bulb claims that their light bulbs last for 90,000 hours on average. To confirm if this claim was valid, a quality control manager got a sample of 300 LED bulbs and obtained a mean lifespan of 85,000 hours and the standard deviation of the manufacturing process is 45000 hours. Use the 90% confidence level.

MATLAB: An Introduction with Applications
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Instruction: Conduct hypothesis testing using the traditional and p-value method. Show the
step-by-step procedures.
A factory manufacturing light-emitting diode (LED) bulb claims that their light bulbs last for
90,000 hours on average. To confirm if this claim was valid, a quality control manager got a
sample of 300 LED bulbs and obtained a mean lifespan of 85,000 hours and the standard
deviation of the manufacturing process is 45000 hours. Use the 90% confidence level.
Transcribed Image Text:Instruction: Conduct hypothesis testing using the traditional and p-value method. Show the step-by-step procedures. A factory manufacturing light-emitting diode (LED) bulb claims that their light bulbs last for 90,000 hours on average. To confirm if this claim was valid, a quality control manager got a sample of 300 LED bulbs and obtained a mean lifespan of 85,000 hours and the standard deviation of the manufacturing process is 45000 hours. Use the 90% confidence level.
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