Chapter Summary 405 7 Chapter Summary Example(s) Review Exercises What Did You Learn? Section 7.1 How to state a null hypothesis and an alternative hypothesis 1 1–6 How to identify type I and type II errors 2 7–10 How to know whether to use a one-tailed or a two-tailed statistical test and find a P@value 3 7–10 How to interpret a decision based on the results of a statistical test 4 7–10 How to write a claim for a hypothesis test 5 7–10 Section 7.2 How to find and interpret P@values 1–3 11, 12 How to use P@values for a z@test for a mean m when s is known 4–6 25, 26 How to find critical values and rejection regions in the standard normal distribution 7, 8 13–16 How to use rejection regions for a z@test for a mean m when s is known 9, 10 17–24, 27, 28 Section 7.3 How to find critical values in a t@distribution 1–3 29–34 How to use the t@test to test a mean m when s is not known 4, 5 35–42 How to use technology to find P@values and use them with a t@test to test a mean m when s is not known 6 43, 44 Section 7.4 How to use the z@test to test a population proportion p 1, 2 45–50 Section 7.5 How to find critical values for a chi-square test 1–3 51–54 How to use the chi-square test to test a variance s 2 or a standard deviation s 4–6 55–62 Study Strategies Stress Management Stress is the physical, mental, emotional, or behavioral reaction to perceived threats or demands. Practice stress management to maintain a sense of well-being and balance during your studies. • Assess your level of stress. Identify and anticipate what is causing your stress (your “stressors”). • Use stress prevention techniques. Some of these include the following. ∘ Manage your time wisely. Some tips for time management are given in the Chapter 3 Summary. ∘ Treat your body right. Try to include rest, relaxation, exercise, and eating healthy meals in your daily routine. Limit caffeine or alcohol products. ∘ Spend time to get a perspective on your life. Use positive and reassuring self-talk. • Address early warning signs of stress. Do not hesitate to seek help. This could include scheduling tutoring sessions. For more information, visit Skills for Success in the accompanying MyLab course.
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