The following data are based on information taken from the Statistical Abstract of the United States (112th Edition). In this table, * =
of family. The percentage data are the percentages of U. S. families of this size
5
6
4
7 or more
2
3
10%
3%
21%
1%
%
42%
23%
(a) Convert the percentage data to probabilities and make a histogram of the prok
ability distribution for family size.
(b) What is the probability that a family selected at random will have only me
members?
(c) What is the probability that a family selected at random will have more the
three members?
(d) Compute H, the expected family size (round families of size 7 or more to size
(e) Compute o, the standard deviation (round families of size 7 or more to size 7