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Chapter 9: The Normal Probability Distribution
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Figure 9-23:
Area for
P
(
z
1.35)
In addition we could have used the standard normal distribution for areas to
the right of a
-value. The same answer will result.
Example 9-4:
Find the area under the standard normal distribution curve
to the left of
= -1.75.
Solution:
This is equivalent to finding
P
(
-1.75). Using the
Normal
Probability Distribution
workbook to solve, we get
the value of 0.0401.
Thus,
P
(
-1.75) = 0.0401. The result is shown in
Figure 9-24.
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