1. (a) If a contingency table has 5 row categories and 6 column categories, how many degrees of freedom are there for the 2 ? test for independence? (b) What is the critical value for the test of independence for the categories represented in the table at the 1% level of significance? (c) And at the 5% level of significance? (d) If the 2 ? value calculated for the test is greater than the critical value, what is your conclusion?

2. Recall Elecmart.xlsx data, Pivot table of Spent vs Gender and Time - focus on count. Find expected frequencies.

3. Consider the following data in the contingency table (TABLE B). Conduct a test of independence at the 5% level for the L and M categories using Table B.

(a) [fa contingency table has 5 row categories and 6 column categories, how many degrees of freedom are there for the 32 test for independence? (b) What is the critical value for the test of independence for the categories represented in the table at the 1% level of signicance? (c) And at the 5% level of signicance? ((1) If the Z2 value calculated for the test is greater than the critical value, What is your conclusion? 2. Recall Elecmartxlsx data, Pivot table of Spent vs Gender and Time focus on count. Find expected frequencies. Count of Spent Column Labels B Row Labels E] Afternoon Evening Morning Grand Total Female 113 36 85 234 Male 41 86 39 166 Grand Total 154 122 124 400 3 Consider the following data in the contingency table (TABLE B). Conduct a test of independence at the 5% level for the L and M categories using Table B. OBSERVED FREQUENCIES EXPECTED FREQUENCIES Show working and all steps in hypothesis testing