Given that z is a standard normal random variable, compute the following probabilities P(0 ≤ z ≤ 0.83) P(-1.57 ≤ z ≤ 0) P(z > 0.44) Please do not solve using Microsoft Excel because I would like to...

Given that z is a standard normal random variable, compute the following probabilities

1. P(0 ≤ z ≤ 0.83)


2. P(-1.57 ≤ z ≤ 0)


3. P(z > 0.44)

Please do not solve using Microsoft Excel because I would like to see the steps involved in solving the equation because my professor is not teaching through excel.