The following represents the probability distribution for the daily demand of computers at a local store. $$\begin{array} { c c }
\text { Demand } & \text { Probability } \
0 & 0.1 \
1 & 0.2 \
2 & 0.3 \
3 & 0.2 \
4 & 0.2
\end{array}$$ The probability of having a demand for at least two computers is
A) 0.7
B) 0.3
C) 0.4
D) 1.0

Question

The following represents the probability distribution for the daily demand of computers at a local store. $$\begin{array} { c c } 
\text { Demand } & \text { Probability } \
0 & 0.1 \
1 & 0.2 \
2 & 0.3 \
3 & 0.2 \
4 & 0.2
\end{array}$$   The probability of having a demand for at least two computers is
A) 0.7
B) 0.3
C) 0.4
D) 1.0

Quizplus · Accepted Answer

The probability of having a demand for at least two computers is the sum of the probabilities of having a demand of 2, 3, or 4 computers: 0.3 + 0.2 + 0.2 = 0.7.

The Following Represents the Probability Distribution for the Daily Demand Demand Probability 00.110.220.330.240.2\begin{array} { c c } \text { Demand } & \text { Probability } \\0 & 0.1 \\1 & 0.2 \\2 & 0.3 \\3 & 0.2 \\4 & 0.2\end{array} Demand 01234​ Probability 0.10.20.30.20.2​

The Following Represents the Probability Distribution for the Daily Demand $\begin{array} { c c } \text { Demand } & \text { Probability } \\0 & 0.1 \\1 & 0.2 \\2 & 0.3 \\3 & 0.2 \\4 & 0.2\end{array}$