Consider the following sequence of PRN's. 0.98 0.95 0.23 0.17 0.12 0.03 0.47 0.83 0.63 0.42 How many runs above and below the mean (0.5) does this sequence have? (a) 2 O (b) 3 O (c) 4 O (d) 5 O (e) 6