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The following scatterplot displays the finish time (in minutes) and age (in years) for the male racers at last weekend's Strawberry Stampede (a 10k race through Arroyo Grande).
(a) Describe the association revealed by this scatterplot (in context).
For the regression output shown below:
The regression equation is finish time_male(min) = 44.4 + 0.193 age_male
Predictor Coef SE Coef T P
Constant 44.394 2.578 17.22 0.000
age_male 0.19273 0.06123 3.15 0.002
(b) Identify and interpret the slope coefficient in context.
(c) Is this relationship between finish time and age statistically significant? Clearly explain how you are deciding.
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