SCENARIO 12-12
the Manager of the Purchasing Department of a Large

question 26

Multiple Choice

SCENARIO 12-12
The manager of the purchasing department of a large saving and loan organization would like to develop a model to predict the amount of time (measured in hours) it takes to record a loan
application.Data are collected from a sample of 30 days, and the number of applications recorded and completion time in hours is recorded.Below is the regression output: $$\begin{array}{l}\begin{array} { l r } \hline { \text { Regression Statistics } } \\\hline \text { Multiple R } & 0.9447 \\\text { R Square } & 0.8924 \\\text { Adjusted R } & 0.8886 \\\text { Square } & \\\text { Standard } & 0.3342 \\\text { Error } & \\\text { Observations } & 30 \\\hline\end{array}\\\text { ANOVA }\\\begin{array} { l r r r r r } \hline & { \text { df } } & { \text { SS } } & { \text { MS } } & \text { F } & \text { Significance } F \\\hline \text { Regression } & 1 & 25.9438 & 25.9438 & 232.2200 & 4.3946 \mathrm { E } - 15 \\\text { Residual } & 28 & 3.1282 & 0.1117 & & \\\text { Total } & 29 & 29.072 & & & \\\hline\end{array}\\\begin{array} { l r r r r r r } \hline & \text { Coefficients } & \text { Standard Error } & t \text { Stat } & \text { P-value } & \text { Lower 95\% } & \text { Upper 95\% } \\\hline \text { Intercept } & 0.4024 & 0.1236 & 3.2559 & 0.0030 & 0.1492 & 0.6555 \\\text { Applications } & 0.0126 & 0.0008 & 15.2388 & 0.0000 & 0.0109 & 0.0143 \\\text { Recorded } & & & & & & \\\hline\end{array}\end{array}$$ 12-46 Simple Linear Regression Simple Linear Regression 12-47
-Referring to Scenario 12-12, the degrees of freedom for the F test on whether the number of load applications recorded affects the amount of time are

• A)1, 28
• B)1, 29
• C)28, 1
• D)29, 1

Understand the structure and function of various blood vessels within the circulatory system.

Comprehend the flow of blood through the heart and the systemic and pulmonary circuits.

Explain the involvement of the nervous system in heart rate regulation.

Define cardiac output and the factors that influence its regulation.

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Definitions:

Free Energy

A thermodynamic quantity that represents the amount of work that can be performed by a system at a constant temperature and pressure.

Entropy

Disorderliness; a quantitative measure of the amount of the random, disordered energy that is unavailable to do work.

Cofactor

A nonprotein substance needed by an enzyme for normal activity; some cofactors are inorganic (usually metal ions); others are organic (coenzymes).

Enzymes

Biological catalysts that speed up chemical reactions in cells without being consumed in the process.