Answer Happy

DIRECTIONS: To find the answer to the riddle, write the answer to each question in the space immediately below it. The word in parentheses in the solution section next to the answer to the first question is the first word in the answer to the riddle, the word beside the answer to the second question is the second word, and so on. A random sample of subjects from a community was asked whether they favor or oppose welfare. They were also asked whether they had ever been on welfare. The following frequencies were obtained. Favor Welfare Oppose Welfare 15 10 Had Been on Welfare Never on Welfare 50 60 1. Is someone who had been on welfare" or someone "never on welfare more likely to favor welfare? 2. What is the grand total of the frequencies? 3. What is the expected frequency for the Never on Welfare Favor Welfare cell? 4. What is the expected frequency for the Never on Welfare Oppose Welfare cell? 314 Worksheet 50 (Continued) 5. To three decimal places, what is the observed value of chi square? (Allow for mi- nor variations in the third place due to rounding.) 6. What is the value of the degrees of freedom? 7. What is the critical value of chi square at the .05 level? 8. Is chi square significant at the .05 level? 9. "The null hypothesis should be rejected at the 05 level." Is this statement true or false?