$$c$)$ If it is expected that $10$ million tourists will visit$$ London, then the expected ridership$=$

$$

$2\mathrm{.}08$ million riders$($round your response to two decimal$$ places$).$

Part $4$

$$d$)$ If there are no tourists at$$ all, then the model still predicts a ridership. This is due to the fact that zero tourists are

outside

the range of data used to develop the model.

Part $5$

$$e$)$ The standard error of the estimate developed using$$ least$-$squares regression$=$

$$

enter your response here $($round your response to three$$ places$).$