Ernie spends 6 hours reading each weekend. ernie has 3 sisters. each sister reads the same amount ernie does each weekend. how many hours do ernie and his sisters read in all?

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f