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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