# How do you find the value of z so that the area under the standard normal curve from 0 to z is 0.4049?

$z \approx 1.310$
If you want the area between 0 and $z$ to be 0.4049, then the total cumulative area up to $z$ will be 0.4049 + 0.5 = 0.9049. I used stat tables to find the $z$ value for 0.9049, which is approximately 1.310.