IT Staff for a Large Corporation Has Developed the Following $\begin{array}{cc}\text { Number of Calls } & \text { Probability } \\0 & .32 \\1 & .35 \\2 & .18 \\3 & .10 \\4 & .05\end{array}$

Multiple Choice

IT staff for a large corporation has developed the following probability
Distribution for the number of calls requiring troubleshooting problems per day. Based
On the distribution, the standard deviation in the number of calls per day is $\begin{array}{cc}\text { Number of Calls } & \text { Probability } \\0 & .32 \\1 & .35 \\2 & .18 \\3 & .10 \\4 & .05\end{array}$

A) 1.31
B) 1.14
C) 2.77
D) 1.56
E) 1.21