\boxed{960}
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- Forested area = $ 0.30 \times 800 = 240 $ km²
- Now, add the forested areas from both regions:
- + 240 = 960 \text{ km}^2
- Question:** A statistician is comparing two models for predicting rainfall. Model X has a mean squared error (MSE) of 0.04, and Model Y has an MSE of 0.01. If the total sum of squared errors (SSE) is proportional to the MSE and the number of data points is 100, what is the ratio of SSE for Model X to SSE for Model Y?
- Since MSE is defined as $ \text{SSE} / n $, where $ n $ is the number of data points, and $ n = 100 $ is constant, we can write:
- SSE for Model X = $ 0.04 \times 100 = 4 $
