Problema Solution
Medication Effectiveness A medication is 75% effective against a bacterial infection. Find the probability that if 12 people take the medication at least 1 person's infection will not improve.
Answer provided by our tutors
Given the problem, it will be
P(at least one not effective) = 1 - P(none are not effective)
= 1- P(all are effective) = 1 - (0.75)^12 = 0.968.