5. Open the handout for Contingency table tests of Independence in the Unit 5 content area. The accompanying table summarizes the relationship work status and smoking.Use a 0.05 significance level to test the claim that smoking is independent of work status.

Educational Status/ Smoking status

Part time employee

Full time, hourly employee

Manager

Smoking

230

130

25

Not Smoking

115

145

55

Null hypothesis:

Alternative hypothesis:

Degree of Freedom:

Critical value:

To calculate the test statistic, find Expected Frequencies.Read Example 2 on p.539-540 in the textbook.

Part time employee

Full time, hourly employee

Manager

Smoking

Not Smoking

Calculate the test statistic.See example on page 536-537 in textbook.

O

E

O-E

(O-E)²

(O-E)²/E

Smoking

Part time employee

Full time, hourly employee

Manager

Not

Part time employee

Smoking

Full time, hourly employee

Manager

Test Statistic =

p-value:

Decision:

Conclusion