Difference in age of the two partners

Reference no: EM131008346

Ages of couples 2007. In Exercise 21 we looked at the age at which women married as one of the variables consid- ered by those selling wedding services. Another variable of concern is the difference in age of the two partners. The graph shows the ages of both men and women at first marriage. (www.census.gov)

a) Interpret the slope of this line in context.

b) Explain why it's silly to attach any meaning to the y-intercept.

c) When this model predicts high Fuel Efficiency, what can you say about those predictions?

d) What Fuel Efficiency does the model predict when the car is driven at 50 mph?

e) What was the actual Fuel Efficiency when the car was driven at 45 mph?

f) Do you think there appears to be a strong association between Speed and Fuel Efficiency? Explain.

g) Do you think this is the appropriate model for that association? Explain.

Reference no: EM131008346

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