Consider computer jobs that run a cluster. The running time (in minutes) of each job follows a normal distribution with mean 15 and variance 4. How many jobs can someone submit to the cluster at most so that with a probability of at least 0.95 he/she is certain that the total running time of the computer jobs will not exceed 200 minutes?
We are given
Also:
We need to find n such that:
Comparing we get:
Solving
Hence n should be 12 for the total running time not to exceed 200.
Hence 12 jobs can be submitted to the cluster at most so that with a probability of at least 0.95 he/she is certain that the total running time of the computer jobs will not exceed 200 minutes
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