The Table Below Shows the Sales Per Day at a Grocery

question 68

Essay

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. $$\begin{array} { | l | l | } \hline & \text { Sales per day in } \\ \text { Day } & \$ \text { xi) } \\\hline 1 & 5000 \\\hline 2 & 5304 \\\hline 3 & 6430 \\\hline 4 & 7889 \\\hline 5 & 5333 \\\hline 6 & 6109 \\\hline 7 & 6734 \\\hline\end{array}$$

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