Chapter 6 Section 63 Problem 17a Find the area under the sta

Chapter 6, Section 6.3, Problem 17a

Find the area under the standard normal curve over the interval z = ?0.64 to z = 0.64. Compute probabilities using the standard normal table in Appendix B (Table 3). Round the answer to four decimal places.

Solution

P(z < -0.64) = 0.2611

P(z < 0.64) = 0.7389

So, P(-0.64 < z < 0.64) = 0.7389 - 0.2611 = 0.4778

Area = 0.4778 --> ANSWER