The number of bad checks received per day by a store and the respective probabilities are shown below.
$\begin{array}{ll}\text { Number of Bad Checks }\
\text { Received Per Day }&\text { Probability }\
0 & 0.04 \
1 & 0.06 \
2 & 0.10 \
3 & 0.30 \
4 & 0.20 \
5 & 0.15 \
6 & 0.10 \
7 & 0.05
\end{array}$
a. What is the expected number of bad checks received per day?
b. Determine the variance in the number of bad checks received per day.
c. What is the standard deviation?

Question

The number of bad checks received per day by a store and the respective probabilities are shown below.
 $\begin{array}{ll}\text { Number of Bad Checks }\
\text { Received Per Day }&\text { Probability }\
0 & 0.04 \
1 & 0.06 \
2 & 0.10 \
3 & 0.30 \
4 & 0.20 \
5 & 0.15 \
6 & 0.10 \
7 & 0.05
\end{array}$ 
a. What is the expected number of bad checks received per day?
b. Determine the variance in the number of bad checks received per day.
c. What is the standard deviation?

Quizplus · Accepted Answer

The Answer of The number of bad checks received per day by a store and the respective probabilities are shown below.
 $\begin{array}{ll}\text { Number of Bad Checks }\
\text { Received Per Day }&\text { Probability }\
0 & 0.04 \
1 & 0.06 \
2 & 0.10 \
3 & 0.30 \
4 & 0.20 \
5 & 0.15 \
6 & 0.10 \
7 & 0.05
\end{array}$ 
a. What is the expected number of bad checks received per day?
b. Determine the variance in the number of bad checks received per day.
c. What is the standard deviation?

The Number of Bad Checks Received Per Day by a Store