10 of a population is color blind and a class of 25 students

10% of a population is color blind and a class of 25 students is drawn randomly from that population. what is the chance that 1 o more students are color blind?

Solution

P(1 or more) = 1 - P(none)

As

P(none) = (1-0.1)^25 = 0.071789799

Thus,

P(1 or more) = 0.928210201 [answer]