According to government data 15 % of employed women have never been married. Take a random sample of employed women and observe their marital status.

A) Is X normal, binomial, or geometri?
B) If 8 employed women are selected at random, what is the probability that 2 or fewer have never been married?
C) If 8 employed women are selected at random, what are the mean and standard deviation?

Question

According to government data 15 % of employed women have never been married. Take a random sample of employed women and observe their marital status.

A) Is X normal, binomial, or geometri?
B) If 8 employed women are selected at random, what is the probability that 2 or fewer have never been married?
C) If 8 employed women are selected at random, what are the mean and standard deviation?

anonymous · Answer

A. They are or are not, so binomial.
B. 
C. Mean will be pN = 0.15(8) = 1.2