Instruction 12-10
the Management of a Chain Electronic Store Would

question 174

Short Answer

Instruction 12-10
The management of a chain electronic store would like to develop a model for predicting the weekly sales (in thousands of dollars)for individual stores based on the number of customers who made purchases.A random sample of 12 stores yields the following results:
$$\begin{array} { | c | c | } \hline \text { Customers } & \text { Sales (Thousands of Dollars) } \\\hline 907 & 11.20 \\\hline 926 & 11.05 \\\hline 713 & 8.21 \\\hline 741 & 9.21 \\\hline 780 & 9.42 \\\hline 698 & 10.08 \\\hline 510 & 6.73 \\\hline 529 & 7.02 \\\hline 460 & 6.12 \\\hline 872 & 9.52 \\\hline 650 & 7.53 \\\hline 603 & 7.25 \\\hline\end{array}$$
-Referring to Instruction 12-10,what is the value of the t test statistic when testing whether the number of customers who make purchases affects weekly sales?

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Definitions:

Dependent-Samples T-Test

A statistical procedure used to compare the means of two related groups, indicating whether there's a significant difference under the assumption of normally distributed differences.

Research Hypothesis

A specific, testable prediction about the expected outcome of a study, often implying a relationship between variables.

Independent-Samples

Pertaining to a research design where different groups of participants are exposed to different conditions or treatments to compare outcomes.

T Value

A statistic that measures the difference between an observed sample mean and the population mean in units of standard error.