Data Were Obtained in a Study of the Oxygen Uptake

question 43

Multiple Choice

Data were obtained in a study of the oxygen uptake of 31 middle-aged-males and females while exercising.The researchers were interested in the use of a variety of variables as predictors of Oxygen Uptake.The variables that were measured on the subjects were Age,Weight,the time taken to run a specified distance (Runtime) ,pulse rate at the end of the run (RunPulse) ,their resting pulse rate (RstPulse) ,and their maximum pulse rate during the run (MaxPulse) .The following table from a computer analysis of the data is provided (with some entries deleted and replaced by _**) . In the above computer output we note that the t ratio for the variable RunPulse is -3.04,with a P-value of 0.0056.What is the best interpretation of this result?

• A)The small P-value suggests that the variable RunPulse is not a significant predictor of Oxygen Uptake.
• B)There is strong evidence that RunPulse is an important variable.
• C)When assessing the value of variables for predicting Oxygen Uptake,the variable RunPulse by itself is very important.
• D)The small P-value suggests that the variable RunPulse is statistically significant when all the other predictor variables are included in the regression equation.
• E)The regression equation should include RunPulse since it is a statistically significant variable.

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Definitions:

Productivity of Labor

The output per labor hour or the efficiency with which labor is utilized in the production process.

Monopsonist

An entity that is the only buyer in a market, giving it significant control over the price and terms of purchase of goods or services.

Upsloping Supply Curve

A supply curve that shows an increase in quantity supplied as the price increases, indicating a direct relationship between price and quantity supplied.

Agency Shop

A place of employment where the employer may hire either labor union members or nonmembers but where those employees who do not join the union must either pay union dues or donate an equivalent amount of money to a charity.