this table, 4 actually represents four or more (the census bureau does not provide separate information on households with 5, 6, or more children under the age of 18). but for purposes of this exercise, assume that it means only households with exactly four children under the age of 18. this is also the probability distribution for the number of children under 18 in a randomly chosen household. the expected value of this distribution is the average number of children under 18 in a household. what is this expected value?
