A sample of 25 light bulbs will be selected to conduct a test to determine if the mean life of the bulb is different than 1000 hours. The sample bulbs had a mean of 994.1 hours and a standard deviation of 30.5 hours. Conduct the test.

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

this is a good question! i'll do some research and come back when i have the answer!

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