Activity 2: Chi-Square Test of Independence

A sample of World Campus students were surveyed. They were asked which of the following they prefer to drink: beer, water, or neither. And, their biological sex was recorded. These data are presented in the table below.

Preferred Drink	Female	Male
Beer	71	158
Wine	139	49
Neither	82	42
Neither	82	42

Activity 2_A:

Compute the relative risk comparing the proportion of males who prefer beer to the proportion of females who prefer beer.

Activity 2_B:

Interpret the relative risk that you computed in part A.

Activity 2_C:

Use Minitab to conduct a chi-square test of independence to determine if there is evidence of a relationship between beverage preference and biological sex in the population of all World Campus students. Use the five-step hypothesis testing procedure.

Activity 2_C:

Step 1: State hypotheses and check assumptions.

Activity 2_C:

Step 2: Compute the test statistic.

Activity 2_C:

Step 3: Determine the p-value.

Activity 2_C:

Step 4: Make a decision (reject or fail to reject the null).

Activity 2_C:

Step 5: State a real-world conclusion.