How to use qnorm function in R with non-symmetric values? For exapmle, P(-2 < z < z0) = 0.9710

Question

I know how to find the z-knot value with symmetry using the qnorm function, like when trying to find P(-z0 <= z <= 0) = 0.2967

tail = (1 - 0.2967)/2 
qnorm(tail)

But how do we use it for something like P(-2 < z < z0) = 0.9710 ?

Can we even use qnorm with non-symmetric stuff?

Thanks

Answer 1

The answer is: z0 = qnorm((1 -0.9710) - pnorm(-2))