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of light bulbs have lives exceeding hours and have lives less than hours the lifetime of

 
 

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1.10% of light bulbs have lives exceeding 2340 hours and 5% have lives less than 2170 hours. The lifetime of ...

ime of bulbs follows a normal distribution. (a) Calculate the mean and standard deviation of the distribution.
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

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