Five marbles are randomly selected with replacement. The probability that a black marble is chosen is 15%. What is the probability that at least 2 marbles are black?

a) 0.86

b) 0.84

c) 0.16

d) 0.14

Question

Five marbles are randomly selected with replacement. The probability that a black marble is chosen is 15%. What is the probability that at least 2 marbles are black?

a)	0.86

b)	0.84

c)	0.16

d)	0.14

anonymous · Answer

at least 2 means 2 or 3 or 4 or 5
too hard
find the probability that you get none or one, then subtract that answer from 1

anonymous · Answer

you know how to do that?

anonymous · Answer

no, can you explain please

anonymous · Answer

the probability you get a black marble is 15%
what is the probability you not get a black marble ?

anonymous · Answer

another to ask this is what is 100% - 15% ?

anonymous · Answer

85%