Question

or a standard normal distribution, find:P(-2.72 < z < -1.78)Normal Table

Answer 1

We know that P(−b < Z ≤ −a ) = P(a < Z ≤ b )

Then,

$P(-2.72Now:[tex]P(z<2.72)-P(z<1.78)=0.9967-0.9625=0.0342$