TABLE 13-10
the Management of a Chain Electronic Store Would

question 112

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 13-10, what are the degrees of freedom of the t test statistic when testing whether the number of customers who make purchase affects weekly sales?

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Definitions:

Negatively Skewed

Describes a distribution of data where the tail is on the left side of the distribution, indicating that the majority of data points are located to the right of the mean.

Research Methods

Techniques or procedures used to gather and analyze information to increase understanding of a topic or issue.

Experimental Designs

Refers to the plan and structure of an investigation aimed at testing hypotheses through controlled and manipulated variables.

Dependent Variable

A variable in an experiment or study whose changes are determined by the manipulation of one or more independent variables.