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.
$$\begin{array} { | c | c | c | }
\hline \begin{array} { c }
\text { No. of } \
\text { breakdowns } \
\text { per week }
\end{array} & \text { Probability } & \begin{array} { c }
\text { Cumulative } \
\text { probability }
\end{array} \
\hline 0 & .10 & .10 \
\hline 1 & .25 & .35 \
\hline 2 & .36 & .71 \
\hline 3 & .22 & .93 \
\hline 4 & .07 & 1.00 \
\hline
\end{array}$$
-What is the probability of 2 or fewer breakdowns?
A) .25
B) .35
C) .36
D) .71

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 trials was 1.93 with a standard deviation of 0.20.
 $$\begin{array} { | c | c | c | } 
\hline \begin{array} { c } 
\text { No. of } \
\text { breakdowns } \
\text { per week }
\end{array} & \text { Probability } & \begin{array} { c } 
\text { Cumulative } \
\text { probability }
\end{array} \
\hline 0 & .10 & .10 \
\hline 1 & .25 & .35 \
\hline 2 & .36 & .71 \
\hline 3 & .22 & .93 \
\hline 4 & .07 & 1.00 \
\hline
\end{array}$$
-What is the probability of 2 or fewer breakdowns?
A) .25
B) .35
C) .36
D) .71

Quizplus · Accepted Answer

The probability of 2 or fewer breakdowns is the cumulative probability up to 2 breakdowns, which is 0.71.

Two Hundred Simulation Runs Were Completed Using the Probability of a Machine