Suppose that in an assortment of 30 calculators there are 5 withdefective switches. Draw with and without replacement. (Enter theprobabilities as fractions.)
(a) If one machine is selected at random, what is theprobability it has a defective switch?
with replacement
without replacement
(b) If two machines are selected at random, what is theprobability that both have defective switches?
with replacement
without replacement
(c) If three machines are selected at random, what is theprobability that all three have defective switches?
with replacement
without replacement
