A computer repair shop has two work centers. The first center examines the computer to see what is wrong and the second center repairs the computer.
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# A computer repair shop has two work centers. The first center examines the computer to see what is wrong and the

second center repairs the computer. Let  and  be random variables representing the lengths of time in minutes to examine a computer ( ) and to repair a computer ( ). Assume  and  are independent random variables. Long-term history has shown the following mean and standard deviation for the two work centers:

Examine computer,:=26.7 minutes;=8.2 minutesRepair computer,:=89.4 minutes;=14.7 minutes

Let  be a random variable representing the total time to examine and repair the computer. Compute the mean and standard deviation of  . Round your answer to the nearest tenth.

X : time to examine Y : repair time X = 2 6 , 7 ; x = 8 , 2 Y = 8 9 , 4 ; y =... View the full answer

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