8.2b Standard Normal Distribution Tables (Example 3)


8.2b Standard Normal Distribution Tables (Example 3)

Example 3:
Find the value of k if
(a) P(Z > k) = 0.0480
(b) P(Z > k) = 0.8350

Solution:
(a)

From the standard normal distribution table, k = 1.665

Z
6
5 (Subtract)
1.6
.0485
5


(b)

From the standard normal distribution table,
k = –0.974 ← (Remember to put a negative sign at the value of k because it is on the left-hand side of the normal curve.)

Z
7
4 (Subtract)
0.9
.1660
10