Let n be the number (in thousands) of ride-related injuries at fixed-site amusement parks in the year

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Let n be the number (in thousands) of ride-related injuries at fixed-site amusement parks in the year that is t years since 2000. A scatterplot of some data and a linear model are sketched in Fig. 95.
Let n be the number (in thousands) of ride-related injuries

a. Use the linear model to estimate the number of ride- related injuries in 2004.
b. What was the actual number of ride-related injuries in 2004?
c. Is your result in part (a) an underestimate or an overestimate? Explain how you can tell this from the graph of the scatterplot and the sketch of the model. Calculate the error in the estimate.

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