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TABLE 13-10
the Management of a Chain Electronic Store

question 73

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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:
 Customers  Sales (Thousands of Dollars) 90711.2092611.057138.217419.217809.4289810.085106.735297.024606.128729.526507.536037.25\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, the director of cooperative education wanted to test the hypothesis that the true slope was equal to 3.0. For a test with a level of significance of 0.05, the null hypothesis should be rejected if the value of the test statistic is __________.


Definitions:

Net Present Value

A financial metric used to evaluate the profitability of an investment, calculated by subtracting the present value of cash outflows from the present value of cash inflows over a period of time.

Salvage Value

The determined residual amount of an asset at the cessation of its utility.

Net Cash Inflows

The total amount of cash received minus cash paid out over a specific period, not including non-cash expenses.

Straight-Line Method

A method of depreciation that allocates an equal portion of an asset’s cost to each year of its useful life.

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