So you could look up a z-table and say, what is the total area under the curve below z is equal to negative 0.8? Another way you could do this is you could use a graphing calculator. I have a TI-84 here, where you have a normal cumulative distribution function. I'm gonna press second, vars, and that gets me to distribution. And so I have these various functions. I want normal cumulative distribution function. So that is choice two.