1)Suppose a company produces widgets and has a 20% defective rate. a.What is the probability that 3 out of 10 randomly selected widgets are defective?...

1)   Suppose a company produces widgets and has a 20% defective rate.

a.    What is the probability that 3 out of 10 randomly selected widgets are defective?

b.    What is the probability that 6 or more out of the 10 randomly selected widgets are defective?

c.    What is the probability that the first defective widget occurs on the fourth one selected?

1)   Suppose that 16% of people in a population are left handed and we are randomly selecting 9 people from that group.

a.    What is the probability the first left handed person is the 6th one selected?

b.    What is the probability that exactly 4 of the 9 are left handed?

c.    What is the probability that no more than 3 of the nine people are left handed?

2)   Suppose that 7% of males are colorblind.

a.    How many males will need to be tested before someone selected is colorblind?

b.    What is the expected number of colorblind men in a group of 30?

c.    What is the probability that none of the 30 men are colorblind?