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 |