Sub-section 4.2e in the text ("Finding Critical Values in a Normal Distribution") is extremely important material. Your success in chapters 5 and 6 depends on your ability to find values like "z0.05" (thez-score that cuts-off an area of 0.05 under the right tail of the standard normal density curve, as illustrated in Figure 4-12 on page 156 of the text). You need to be able to find critical values like this one using both Table A-1 (the 2-page table of "Cumulative Area to the Left of z Scores in the Standard Normal Distribution" in Appendix A of our text or in our formula card) and technology (your TI-83/84).

Find the value of z0.03 two ways:

A: Use Table A-1.

B: Use technology (your TI-83/84), and round your answer to 4 places after the decimal point.

Right-Tailed Critical Values in the Standard Normal Distribution:

The greatest 5% of the standard normal distribution's values are located under the shaded region.