The lifespan of xenon metal halide arc-discharge bulbs for aircraft landing lights is normally distributed with a mean of 1,800 hours and a standard deviation of 430 hours. (a) If a new ballast system...

The lifespan of xenon metal halide arc-discharge bulbs for aircraft landing lights is normally distributed with a mean of 1,800 hours and a standard deviation of 430 hours.


(a)If a new ballast system shows a mean life of 2,260 hours in a test on a sample of 8 prototype new bulbs, would you conclude that the new lamp’s mean life exceeds the current mean life atα = 0.02?

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  No

  
  

  
  
  
  


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  Yes

  
  

  
  
  
  

(b)What is thep-value?(Round your answer to 4 decimal places.)



p-value