Question

Barbara tosses 9 fair coins in one toss. For each coin that lands on heads, she is awarded 5 points. for each coin that lands on tails, she is awarded 0 points. if N is a random variable that represents her total score for any given toss, what is the expected value of N?
a. 2.5
b. 5
c. 22.5
d. 45

Answer 1

I think it is your answer option (d). I hope this helped you.