13 Here is a table showing fictitious trial results of a new acne medication a P IM Condition improved 1 No change N Condition

Question

13 Here is a table showing fictitious trial results of a new acne medication a P IM Condition improved 1 No change N Condition worse W Check Clear Give the exact answer not a decimal approximation Check Clear b P MI Total c P I Assume that a participant is selected at random Let M be the event that the participant used the medication L the event that the participant used the placebo I the event that the participant s condition improved and so on as shown by the letters in the headings Give the exact answer not a decimal approximation Check Clear Give the exact answer not a decimal approximation Check Clear d P M Give the exact answer not a decimal approximation Used medication M Used placebo L 50 100 90 710 900 e Test the events I and L for independence Independent O Dependent 10 40 100 Independent Total 150 100 750 1000

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