. Find the area under the Normal Curve: a. between z = 0 and z = -1.65 b. to the right of z = -0.95 c. to the left of z = 0.35 d. between z = -1.35 and z = 2.95 e. to the left of z = -1.69

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ANSWER D AND E WITH SOLUTIONS AND GRAPH, JUST LIKE IN THE EXAMPLE GIVEN

EXAMPLE 4: Find the area between z = -1.25 and z = 1.25.
SOLUTION:
STEP 1.
Sketch the normal curve.
Since -1.25 is negative it is
somewhere to the left of 0.
And since 1.25 is positive it is
somewhere to the right of 0.
-3 -2 -1
1
2
3
STEP 2.
Let A = area between z = -1.25 and z = 1.25
A1= area between z = 0 and z =
From the table A1 = 0.3944
%3D
-1.25.
A2= area between z = 0 and z =
1.25.
From the table A2 = 0.3944
Therefore, A = A1 + A2 = 0.3944 + 0.3944 = 0.7888
The area between z = -1.25 and z = 1.25 is 0.7888.
Transcribed Image Text:EXAMPLE 4: Find the area between z = -1.25 and z = 1.25. SOLUTION: STEP 1. Sketch the normal curve. Since -1.25 is negative it is somewhere to the left of 0. And since 1.25 is positive it is somewhere to the right of 0. -3 -2 -1 1 2 3 STEP 2. Let A = area between z = -1.25 and z = 1.25 A1= area between z = 0 and z = From the table A1 = 0.3944 %3D -1.25. A2= area between z = 0 and z = 1.25. From the table A2 = 0.3944 Therefore, A = A1 + A2 = 0.3944 + 0.3944 = 0.7888 The area between z = -1.25 and z = 1.25 is 0.7888.
. Find the area under the Normal Curve:
a. between z = 0 and z = -1.65
b. to the right of z = -0.95
c. to the left of z = 0.35
d. between z = -1.35 and z = 2.95
e. to the left of z = -1.69
Transcribed Image Text:. Find the area under the Normal Curve: a. between z = 0 and z = -1.65 b. to the right of z = -0.95 c. to the left of z = 0.35 d. between z = -1.35 and z = 2.95 e. to the left of z = -1.69
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