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Fix error in Exercise2.Rmd #1

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Fix error in Exercise2.Rmd #1

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2 changes: 1 addition & 1 deletion R_Exercises/Exercise2/Exercise2.Rmd
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Original file line number Diff line number Diff line change
Expand Up @@ -111,7 +111,7 @@ iv)
predict(lm.fit, data.frame(horsepower=98), interval="confidence")
predict(lm.fit, data.frame(horsepower=98), interval="prediction")
```
The predicted mpg is 23.47. The lower and upper 95% prediction interval is 14.8 to 34.12. The 95% confidence interval is 23.97-24.96, much tighter.
The predicted mpg is 24.47. The lower and upper 95% prediction interval is 14.8 to 34.12. The 95% confidence interval is 23.97-24.96, much tighter.

#### Part b)
```{r fig.width=7, fig.height=5}
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