... cdf is in (−∞, 2) , 1/36 in [2, 3), 3/36 in [3,4), 6/36 in [4,5), 10/36 in [5,6), 15/36 in [6,7), 21 /36 in [7,8), 26 /36 on [8,9), 30/36 in [9,10), 33/36 in [10,11), 35/36 on [11, 12) , and in [ 12, +∞) ... (1/36,3/36], in (3/36,6/36], in (6/36,10/36], in (10/36,15/36], in (15/36 ,21 /36], in (21 /36 ,26 /36], in (26 /36,30/36], 10 in (30/36,33/36], 11 in (33/36,35/36], and 12 in (35/36,1] 76 RANDOM VARIABLES q ... with and without the notation E[x] = µ: var[x] = E[(x − E[x] )2 ] var[x] = E[(x − µ )2 ] = E[x2 − 2x(E[x]) + (E[x] )2 ] (3.10.17) 2 = E[x ] − 2( E[x]) + (E[x]) = E[x2 ] − (E[x] )2 = E[x2 − 2xµ + µ2...