(a) It is noted that 8% of students are left handed. If 20 students are randomly selected, calculate the {nl} {nl} i. probability that none of them are left-handed,
ii. probability that at most 2 are left-handed,
iii. standard deviation for the number of left-handed students
(b) If 50 classes of 20 students are randomly selected, what is the probability that 10 classes have no left-handed students?
Pls elaborate ;)
