Question

If a fair coin is tossed 8 times, what is the probability, to the nearest thousandth, of
getting exactly 7 tails?

Answer 1

1/256 because it would be 1/2 multiplied by 1/2 eight times to get a certain outcome.

Answer 2

Answer: 0.031

Step-by-step explanation:

n=8

r=7

p=1/2

q=1-1/2=1/2

nCrP^rQ^n-r

8C7(1/2)^7(1/2)^1

0.03125= 0.031