TABLE 13-10
the Management of a Chain Electronic

question 164

Essay

TABLE 13-10
The management of a chain electronic store would like to develop a model for predicting the weekly sales (in thousand of dollars) for individual stores based on the number of customers who made purchases. A random sample of 12 stores yields the following results:
$$\begin{array} { | l | l | } \hline \text { Customers } & \text { Sales (Thousands of Dollars) } \\\hline 907 & 11.20 \\\hline 926 & 11.05 \\\hline 713 & 8.21 \\\hline 741 & 9.21 \\\hline 780 & 9.42 \\\hline 898 & 10.08 \\\hline 510 & 6.73 \\\hline 529 & 7.02 \\\hline 460 & 6.12 \\\hline 872 & 9.52 \\\hline 650 & 7.53 \\\hline 603 & 7.25 \\\hline\end{array}$$
-Referring to Table 13-10, construct a 95% confidence interval for the change in average weekly sales when the number of customers who make purchases increases by one.

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Definitions:

Peristalsis

Rhythmical contractions of the intestine that propel gastric contents through the length of the gastrointestinal tract.

Stool Incontinence

The inability to control bowel movements, causing unintentional passing of stool.

Clostridium Difficile

A type of bacteria responsible for effects that vary from mild diarrhea to severe colon inflammation that can endanger life.

Ileostomy

A surgical opening created in the ileum (part of the small intestine) to divert waste out of the body through a stoma.