The table below shows the sales per day at a grocery store over a period of a week. Calculate the z-score for sales on Day 4. $\begin{array}{|c|l|}
\hline \text { Day } & \begin{array}{l}
\text { Sales per day in } \
\text { \$(Xi) }
\end{array} \\hline 1 & 5000 \
\hline 2 & 5304 \
\hline 3 & 6430 \
\hline 4 & 7889 \
\hline 5 & 5333 \
\hline 6 & 6109 \
\hline 7 & 6734 \
\hline
\end{array}$

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The Answer of The table below shows the sales per day at a grocery store over a period of a week. Calculate the z-score for sales on Day 4. $\begin{array}{|c|l|}
\hline \text { Day } & \begin{array}{l}
\text { Sales per day in } \
\text { \$(Xi) }
\end{array} \\hline 1 & 5000 \
\hline 2 & 5304 \
\hline 3 & 6430 \
\hline 4 & 7889 \
\hline 5 & 5333 \
\hline 6 & 6109 \
\hline 7 & 6734 \
\hline
\end{array}$

The Table Below Shows the Sales Per Day at a Grocery