4000 3000
2000 1000
0.0012 0.0010
0.0008 0.0006
0.0004 0.0002
0.0000
X fx
Normal Distribution: = 2450, = 400
. .
. .
. .
5 4
3 2
1 -1
-2 -3
-4 -5
0.4 0.3
0.2 0.1
0.0
Z fz
S tand ard Norm al D istributio n
1. Draw pictures of the normal
distribution in question and of the
standard normal distribution.
1. Draw pictures of the normal
distribution in question and of the
standard normal distribution.
Variable, Given a Probability Variable, Given a Probability
1. Draw pictures of the normal
distribution in question and of the
standard normal distribution.
1. Draw pictures of the normal
distribution in question and of the
standard normal distribution.
2. Shade the area corresponding to
the desired probability.
2. Shade the area corresponding to
the desired probability.
Variable, Given a Probability Variable, Given a Probability
4000 3000
2000 1000
0.0012 0.0010
0.0008 0.0006
0.0004 0.0002
0.0000
X fx
Normal Distribution: = 2450, = 400
. .
. .
. .
.4750 .4750
.9500
5 4
3 2
1 -1
-2 -3
-4 -5
0.4 0.3
0.2 0.1
0.0
Z fz
S tand ard Norm al D istribution
.4750 .4750
.9500
z .05
.06 .07
. .
. .
. .
. .
. .
. .
. .
. 1.8
. . . 0.4678
0.4686 0.4693
1.9 . . .
0.4744 0.4750
0.4756 2.0
. . . 0.4798
0.4803 0.4808
. .
. .
. .
. .
. .
3. From the table of the standard
normal distribution,
find the z value or values.
3. From the table of the standard
normal distribution,
find the z value or values.
1. Draw pictures of the normal
distribution in question and of the
standard normal distribution.
1. Draw pictures of the normal
distribution in question and of the
standard normal distribution.
2. Shade the area corresponding
to the desired probability.
2. Shade the area corresponding
to the desired probability.
Variable, Given a Probability Variable, Given a Probability
4000 3000
2000 1000
0.0012 0.0010
0.0008 0.0006
0.0004 0.0002
0.0000
X fx
Normal Distribution: = 2450, = 400
. .
. .
. .
.4750 .4750
.9500
5 4
3 2
1 -1
-2 -3
-4 -5
0.4 0.3
0.2 0.1
0.0
Z fz
S tand ard Norm al D istrib utio n
.4750 .4750
.9500
-1.96 1.96
4. Use the transformation
