Chapter 6, Problem 3PS

Given a standardized normal distribution (with a mean of 0 and a standard of 1, as in Table E.2), what is the probability that

$\begin{array}{l}\text{a}\text{.}\text{Z}\text{is}\text{less}\text{than}\text{1}\text{.08?}\\ \text{b}\text{.}\text{Z}\text{is}\text{greater}\text{than}-\text{0}\text{.21?}\\ \text{c}\text{.Z}\text{is}\text{less}\text{than}-\text{0}\text{.21}\text{or}\text{greater}\text{than}\text{the}\text{mean?}\\ \text{d}\text{.}\text{Z}\text{is}\text{less}\text{than}-\text{0}\text{.21}\text{or}\text{greater}\text{than}\text{1}\text{.08?}\end{array}$