Sample size problems: Just state the minimum sample size Confidence intervals: state your result is a sentence, like "we are 95% confident that ? Is between blank and blank " Hypothesis tests: perform the appropriate hypothesis test, including all 5 steps. 1. Ho & H1 2. a= 3. Test 4. Test statistic and p-value 5. Decision about H0/ conclusion about H1 If the necessary conditions are not let, use the appropriate alternative test. 1. One Proportion- Binomial 2. Two proportion- randomization test for two proportions 3. One mean - sign test 4. Paired difference- Wilcoxon Signed Ranks 5. Two mean test- Mann Whitney 6. Anova- Kruskal Wallis 14) A 1970 study showed that of American married- couple families, 43% had no children, 18% had on child, 18% had two children and 21% had three children. A recent survey of 500 American married-couple families revealed that 267 had no children, 87 had one child, 96 had two children and 50 had three children. At the 0.01 level of significance, test the claim that the 1970 proportions are no longer valid