Atennis player makes a successful first serve 51% of the time. if she serves 9 times, what is the probability that she gets exactly 3 successful first serves in? assume that each serve is independent of the others.

0.154

Explanation:

Given

Probability of success p=0.51

Probability of failure q=0.49

She serves 9 times out which she gets exactly 3 successful first serves in

Using binomial distribution to find Probability of exactly r successful attempts out of n is given by

For r=3 and n=9

013222

52222222222222222222222222222222222

explanation:

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.