A bised coin with Pr(?)=0.6 is tossed 85 times

Question

 A bised coin with Pr(θ)=0.6 is tossed 85 times. Compute the expected number of times head comes up 

Answer 1

I'll assume by Pr(θ) you mean the probability of heads coming up? If so, you need only multiply the probability of getting heads by the number of times you're tossing the coin:

 

85(0.6) = 51 times