91影视

It is given in the question that, $z$is between 鈭�$1.33$and $1.65$

The below Standard Normal probabilities table is a table of areas under the standard Normal Curve. The table entry for each value $z$is the area under the curve to the left of $z$.

shows the graph and table,

a) From the Standard Normal probabilities table, the area to the left of $z=1.65$is $0.9505$, and the area to the left of $z=-1.33$is $0.0918$.

The area between $z=-1.33$and $z=1.65$is the area to the left of $1.65$minus the area to the left of $-1.33$.

Therefore, the area between $z=-1.33$& $z=1.65$is $0.9505-0.0918=0.8587$. The result is shown in the below graph.

It is given in the question that, $z$is between $0.50$and $1.79$

(b) From the Standard Normal probabilities table, the area to the left of $z=1.79$is $0.9633$and the area to the left of $z=0.50$is $0.6915$.

The area between $z=0.50$and $z=1.79$is the area to the left of $1.79$minus the area to the left of $0.50$.

Therefore, the area between $z=0.50\&z=1.79$is $0.9633-0.6915=0.2718$. The result is shown in the below graph.

Therefore, the area between$z=0.50\mathrm{\&}z=1.79$is$0.9633鈭�0.6915=0.2718$