Amy wants to estimate the average number of items per purchase at the express lane of a local grocery store. She has estimated the following probabilities based on a sample size of 50 customers. Determine the expected value, variance, and standard deviation of items per purchase. $$\begin{array} { | l | l | }
\hline \text { Items per Purchase } & \text { Probability } \
\hline 1 & 0.29 \
\hline 2 & 0.16 \
\hline 3 & 0.15 \
\hline 4 & 0.18 \
\hline 5 & 0.22 \
\hline
\end{array}$$

Question

Amy wants to estimate the average number of items per purchase at the express lane of a local grocery store. She has estimated the following probabilities based on a sample size of 50 customers. Determine the expected value, variance, and standard deviation of items per purchase. $$\begin{array} { | l | l | } 
\hline \text { Items per Purchase } & \text { Probability } \
\hline 1 & 0.29 \
\hline 2 & 0.16 \
\hline 3 & 0.15 \
\hline 4 & 0.18 \
\hline 5 & 0.22 \
\hline
\end{array}$$

Quizplus · Accepted Answer

The Answer of Amy wants to estimate the average number of items per purchase at the express lane of a local grocery store. She has estimated the following probabilities based on a sample size of 50 customers. Determine the expected value, variance, and standard deviation of items per purchase. $$\begin{array} { | l | l | } 
\hline \text { Items per Purchase } & \text { Probability } \
\hline 1 & 0.29 \
\hline 2 & 0.16 \
\hline 3 & 0.15 \
\hline 4 & 0.18 \
\hline 5 & 0.22 \
\hline
\end{array}$$

Amy Wants to Estimate the Average Number of Items Per