document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1180931>Question 1180931</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3) Suppose the time it takes for customer representatives to diagnose and fix computer problems is<BR>\n" );
document.write( "uniformly distributed from 10 to 120 minutes.<BR>\n" );
document.write( "a. What is the probability that a problem is diagnosed and fixed within 30 minutes?<BR>\n" );
document.write( "b. What is the probability that it takes longer than 90 minutes to diagnose and fix a computer problem?<BR>\n" );
document.write( "c. What is the average time for customer representatives to diagnose and fix computer problems?\r<BR>\n" );
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document.write( "For part a, I will disagree with tutor @ikleyn.  Since the distribution is uniform between 10 and 120 minutes, I interpret that to mean the probability of having the diagnosis complete in less than 10 minutes is 0.<br><BR>\n" );
document.write( "Therefore the diagnosis times that are less than 30 minutes are between 10 and 30 minutes instead of between 0 and 30 minutes.  That makes the probability in this case 20/110 = 2/11.<br><BR>\n" );
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