Ravi uses a biased 5-sided spinner, labelled 1 to 5. The table gives the probability for each number.
(b)[2]
Find the probability that the result is 2 or 3.
(c(i))[2]
Find the probability that the number is 2 on both spins.
(c(ii))[3]
Find the probability that the total is 3.
(d)[1]
Calculate how many times he would expect the number 1.
Worked solution & mark scheme
This 11-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The correct result is $\frac18$.” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI