Table 11.11 gives the probability function for the random variable giving the household size for an owneroccupied housing unit in the US. 

Table 11.11

(a) Verify that the sum of the probabilities is 1 (up to round-off error).
(b) What is the probability that a unit has only one or two people in it?
(c) What is the probability that a unit has five or more people in it?
(d) What is the probability that more than one person lives in a US owner-occupied housing unit?

Transcribed Image Text:

3 2 4 p(x) 0.217 0.363 0.165 0.145 0.067 0.026 0.018