Serena Williams made a successful first serve 67% of the time in a wimbledon finals match against her sister venus. If she continues to serve at the same rate the net time they play and serves 6 times in the first game, determine the following probabilities (assume that each serve is independent of each other)

a. all 6 serves will be in
b. exactly 4 serves will be in
c. at least 4 serves will be in

Please post work, I already know answers, thanks

Question

Serena Williams made a successful first serve 67% of the time in a wimbledon finals match against her sister venus. If she continues to serve at the same rate the net time they play and serves 6 times in the first game, determine the following probabilities (assume that each serve is independent of each other) 

a. all 6 serves will be in 
b. exactly 4 serves will be in
c. at least 4 serves will be in 

  Please post work, I already know answers, thanks

anonymous · Answer

c   at least 4 serves will be in