the census bureau gives this distribution for the number of a family household's related children under the age of 1818 in american households in 2016: number of children 00 11 22 33 44 proportion 0.580.58 0.180.18 0.160.16 0.060.06 0.020.02 in this table, 44 actually represents four or more (the census bureau does not provide separate information on households with 5,5, 6,6, or more children under the age of 18).18). but for purposes of this exercise, assume that it means only households with exactly four children under the age of 18.18. this is also the probability distribution for the number of children under 1818 in a randomly chosen household. the expected value of this distribution is the average number of children under 1818 in a household. what is this expected value? (use decimal notation. give your answer as an exact number.)