Question: Two hundred simulation runs were completed using the probability of a machine breakdown from the table below. The average number of breakdowns from the simulation

Two hundred simulation runs were completed using the probability of a machine breakdown from the table below. The average number of breakdowns from the simulation trials was 1.93 with a standard deviation of 0.20.

No. of breakdowns per week Probability Cumulative probability

0 .10 .10

1 .25 .35

2 .36 .71

3 .22 .93

4 .07 1.00

What is the probability of 2 or fewer breakdowns?

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