11.10 Practice 2: contingency tables

Student learning outcomes

• The student will conduct a test for independence using contingency tables.

Conduct a hypothesis test to determine if smoking level and ethnicity are independent.

Collect the data

Copy the data provided in Probability Topics Practice 1: Contingency Tables into the table below.

Hypothesis

State the hypotheses.

• $H_o:$
• $H_a:$

Expected values

Enter expected values in the above below. Round to two decimal places.

Analyze the data

Calculate the following values:

Graph the data

Conclusions

State the decision and conclusion (in a complete sentence) for the following preconceived levels of $\alpha$ .