At one large college, $22\%$ of the students have a car.
(a)[1]
3 students are selected at random from the college. Find the probability that each of the 3 students owns a car.
(b)[3]
16 students are selected at random from the college. Find the probability that the number of these car owners is at least 2 and at most 4.
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The correct calculation is $0.22^3=0.0106$.” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI