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Chapter 9: The Normal Probability Distribution

Figure 9-26:

Area for

P

(1.5

z

2.5)

Example 9-6:

Find the area under the standard normal distribution curve

between

= -1.99 and

= -0.66.

Solution:

This is equivalent to finding

P

(-1.99

-0.66). That is, we

need to find

P

(-1.99

-0.66). Using the

Normal Probability

Distribution

workbook to solve, we get the value of 0.2313. Thus,

P

(-1.99

-0.66) = 0.2313. The result is shown in

Figure 9-27.

Click here for the z-Table Workbook