Each of the following pairs represents the number of licensed drivers (X) and the number of cars
Question:
DRIVERS ( X ) CARS ( Y )
5.............. 4
5.............. 3
2.............. 2
2.............. 2
3.............. 2
1.............. 1
2.............. 2
(a) Construct a scatterplot to verify a lack of pronounced curvilinearity.
(b) Determine the least squares equation for these data. (Remember, you will first have to calculate r, SSy , and SSx.)
(c) Determine the standard error of estimate, sy | x , given that n 5 7.
(d) Predict the number of cars for each of two new families with two and five drivers.
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