TABLE 13-10
the Management of a Chain Electronic Store

question 60

Short Answer

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 13-3, suppose the director of cooperative education wants to obtain a 95% confidence interval estimate for the mean number of job offers received by people who have had exactly one cooperative education job. The confidence interval is from____to ____ .

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Definitions:

Occipital Cortex

The part of the brain located at the back of the head, crucial for processing visual information.

Temporal Cortex

Part of the cerebral cortex involved in processing auditory information and encoding memory.

Unconscious Inference

A process postulated by Hermann von Helmholtz to explain certain perceptual phenomena such as size constancy. For example, an object is perceived to be at a certain distance and this is unconsciously taken into account in assessing its retinal image size, with the result that size constancy is maintained.

Size Constancy

The perceptual understanding that an object's size remains the same despite changes in the distance from which it is observed.