# The Normal Probability Distribution

Discussion 3 Instructorâ€™s Notes;

The discussion is an exercise in using the probability tablesâ€”and then talking about it. Post earlyâ€”there is not really much to say. If you have a loose-leaf book, the table is obviously not on the inside front coverâ€”all the tables are in Appendix B: Tables.

In Â§6.2 we are introduced to the Normal Probability Distribution and the special case of the Normal Probability Distribution, the Standard Normal Probability Distribution, which is a Normal Probability Distribution with mean (u) zero and variance (Ïƒ2) one.

One way to find probabilities from a Standard Normal Distribution is to use probability tables, which are located inside the front cover of your textbook.

• According to the table, what is the probability when z â‰¤ -1.75? The probability when z â‰¤ 1.75?
• What properties of probability distributions and specifically the Normal Probability Distribution do you notice from the two probabilities that you have found in the table?