Historical Records on a Certain Product Indicate the Following Behavior

question 20

Essay

Historical records on a certain product indicate the following behavior for demand. The data represent the 288 days that the business was open during 2000. Convert these data into random number intervals.
$$\begin{array} { | c | c | } \hline \begin{array} { c } \text { Demand in } \\\text { cases }\end{array} & \begin{array} { c } \text { Number of } \\\text { occurrences }\end{array} \\\hline 7 & 52 \\\hline 8 & 9 \\\hline 9 & 14 \\\hline 10 & 39 \\\hline 11 & 72 \\\hline 12 & 102 \\\hline\end{array}$$

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