Probabiilty of no heads means ALL tails.
So, in 5 flips, we want:
T T T T T
Probability of tail is 0.5
Also,
Probability of heads/tails in each flips in independent of all other flips so each flip having tails have a probability of 0.5 each.
Thus,
[tex]P(\text{no headsd)=P(all tails)=0.5x0.5x0.5x0.5x0.5=0.03125}[/tex]
In percentage to nearest hundredth, the answer is:
0.03125 * 100 = 3.125%,
3.13%
