4. Refer to the following for this question. S2(HH)=24 S1 (HH)=$1 (HT)=15 S2(HT)= 9 So=10 S1 (TH)=S1(TT)=5 S2(TH)=12 S2 (TT)=2 With P({ HH }) = 0.2, P({HT}) = 0.15, P({TH }) = 0.3, P({TT} ) = 0.35, answer the follow- ing questions. (Express your answer to 2 decimal places.) (a) What is F(6) if F is the cdf of S, ?