MATHEMATICS · Single correct · GCSE · Mathematics · Probability · Probability
Problem
A student has recorded 45 successes in 90 trials. They can perform at most 20 more trials. Assuming each future trial could be a success, what is the smallest number of additional trials (all successes) required to make the empirical probability reach at least 0.60?
(a) 9
(b) 18
(c) Not possible within 20 trials
(d) 20