1.  Ho= There is no association between drinking and smoking

     Ha= There is an association between drinking and smoking

2.  Significance level .05

     Test Statistic = Chi-Square Test for Independence

Cell Count

Tally for Discrete Variables: Drink @ parties, Drink, Smoke, Smoke @ parties

Drink @ Smoke @

parties Count Drink Count Smoke Count parties Count

no 19 no 20 no 21 no 21

yes 10 yes 9 yes 8 yes 8

N= 29 N= 29 N= 29 N= 29

 

Assumptions: We obtained a random sample, but we have to assume that the population is normal since we had less than 30. Therefore the Central Limit Theorem does not apply.

 

Chi-Square Test: Drinks, Smokes

Expected counts are printed below observed counts

Chi-Square contributions are printed below expected counts

Drinks Smokes Total

no 39 42 81

40.50 40.50

0.056 0.056

yes 19 16 35

17.50 17.50

0.129 0.129

Total 58 58 116

Chi-Sq = 0.368, DF = 1, P-Value = 0.544

 

Degrees of Freedom= 1