1. Chi-Square Test of Homogeniety

2. The following shows the results of 200 test scores. Are the test scores normally distributed? ScoreFreq% 50 - 5919 59 - 6861 68 - 7782 77 - 8634 86 - 954

3. Are your nuts evenly distributed? nutobserved Bazil112 Cashew183 Almonds207 Hazelnut71 Peanut446

4. Contingency Table Listed in terms of Rows X Columns Df = (#Rows -1) (#Columns – 1) Expected Value =

5. Test for Homogeniety Test to see if proportions are the same

6. Test of Homogeniety State the hypotheses Assumptions Name of Test Compute expected values Find test statistic Find p-value Make Decision State Conclusion

7. An advertising firm has decided to ask 92 customers at each of three local shopping malls if they are willing to take part in a market research survey. At a 1% significance level, can it be concluded that the proportions of those who are willing to participate are equal? Mall AMall BMall C Will Participate524536 Will Not Participate404756

8. Survey of 300 1 st time fathers to see if there were in the delivery room when their child was born. Are the proportions of those in the delivery room the same at three local hospitals? Hospital AHospital BHospital C Present666056 Not Present91519

9. Let’s check our eye dominance! Is it the same for boys & girls?

10. Homework Worksheet