The public housing authority in a certain community conducted a survey of 1000 families to determine the distribution of families by the size. The results follow:
family size|2 3 4 5 6 7 8
---------------------------------------
frequency
of
occurrences 350 200 245 125 66 10 4

Question

The public housing authority in a certain community conducted a survey of 1000 families to determine the distribution of families by the size. The results follow:
family size|2       3      4      5      6      7       8 
---------------------------------------
frequency 
of
occurrences 350  200  245  125   66    10       4

anonymous · Answer

A.Find the probability distribution of the random variable x, where x denotes the number of people in a randomly chosen family.

anonymous · Answer

b.draw the histogram corresponding to the probability distribution found in part (a).

C.find the probability that a family chosen at random from those surveyed has more than five members.