Exercise

Add second normal curve

Now add the normal curve for the return on Starbucks stock to the plot.

You can add lines to a plot with lines(x, y). Furthermore, you can specify the line color with the col argument.

Note that a plot legend is added for you in the code on the right.

Instructions

100 XP

Add a red line for the values of the assumed normal density for the return on Starbucks stock (SBUX) against x_vals.