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 expected daily demand is
A) 1.0
B) 2.2
C) 2.0
D) 4.0

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 expected daily demand is
A) 1.0
B) 2.2
C) 2.0
D) 4.0

Quizplus · Accepted Answer

The expected daily demand is calculated by multiplying each demand by its probability and summing the results: (0*0.1) + (1*0.2) + (2*0.3) + (3*0.2) + (4*0.2) = 2.2.

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 $\begin{array} { c c } \text { Demand } & \text { Probability } \\0 & 0.1 \\1 & 0.2 \\2 & 0.3 \\3 & 0.2 \\4 & 0.2\end{array}$