Answer:
0.875
Step-by-step explanation:
Given that a fair coin is tossed.
The probability for head turning up is 1/2= 0.5
When coin is tossed three times we know each toss is independent of the other.
Also probability of getting tail is = 0.5 in each trial
So X = the number of tails obtained in 3 tosses is binomial with n = 3 and p = 0.5
Required probability =
the probability that on at least one of the tosses the coin will turn up tails
=[tex]P(X\geq 0)\\= 1-P(X=0)\\\\=1-(1-0.5)^3\\= 0.875[/tex]
