Question

Sketch the areas under the standard normal curve over

Answer 1

Answer:

a) $P(Z$

b) $P(Z>0.15)=1-0.560=0.440$

c) $P(-1.40$

Step-by-step explanation:

a)To the left of z = 0.72.

For this case the shaded area is on the figure 1 attached.

And we can find the area with the normal standard table of with the following excel code:

=NORM.DIST(0.72,0,1,TRUE)

$P(Z$

b)To the right of z = 0.15.

For this case the shaded area is on the figure 2 attached.

And we can find the area with the normal standard table of with the following excel code:

=1-NORM.DIST(0.15,0,1,TRUE)

$P(Z>0.15)=1-0.560=0.440$

c)Between z = -1.40 and z = 2.03.

For this case the shaded area is on the figure 3 attached.

And we can find the area with the normal standard table of with the following excel code:

=NORM.DIST(2.03,0,1,TRUE)-NORM.DIST(-1.40,0,1,TRUE)

$P(-1.40$