3. Appendix IV contains five major columns of random numbers, each of which contains four two-digit columns. Use the first two digits on the left in the middle major column. Begin at the top of the column of random numbers, and translate them to service times by use of the probability distribution constructed in problem 2b. Each time an observation is obtained, compute the mean of all observations thus far. Continue taking observations until 5 consecutive values of the estimated mean remain within +2 percent of the true mean calculated in problem 2a.

a. How many random observations were required to meet this criterion?

b. Is there a danger from reaching a conclusion regarding steady-state conditions of a system based on only a few runs of a simulation model?