Question: Using the data below, suppose we focus on the proportions of patients who show improvement. Is there a statistically significant difference in the proportions of

Using the data below, suppose we focus on the proportions of patients who show improvement. Is there a statistically significant difference in the proportions of patients who show improvement between treatments 1 and 2. Run the test at a 5% level of significance.

Symptoms

Worsened

No Effect

Symptoms Improved

Total

Treatment 1

22

14

14

50

Treatment 2

14

15

21

50

Treatment 3

9

12

29

50

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