Hal results of a new acne medication: Used medication (M) Used placebo (L) Total Condition improved (I) 400 500 900 No change (N) 400 500 900 Condition worse (W) 200 500 700 Total 1000 1500 2500 Let M be the event that a participant used the medication, L the event that a participant used the placebo, I the event a the participant's condition improved, a so on as shown by the letters in the headings. Find the relative frequency in each case (a) P(I) Check Clear (b) E: It is not the case that a participant used the medication. P(E) Check Clear (c) P(LN) Check Clear (d) F: A participant used the medication or saw their condition improve. P(F) Check Clear A participant who used the placebo saw no change in their condition.