SOLUTION: We flip a fair coin 10 times. What is the probability that a. We get heads in exactly 8 of the 10 flips? b. We get heads in at least 8 of the 10 flips?

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Question 1120180: We flip a fair coin 10 times. What is the probability that
a. We get heads in exactly 8 of the 10 flips?
b. We get heads in at least 8 of the 10 flips?

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Exactly 8 is 10C8*0.5^8*0.5^2
This is 45/1024
8, 9, and 10 would be at least
9 heads is 10C9*0.5^10 or 10/1024
10 heads is 1/1024
At least 8 is the sum or 56/1024
These can be converted to decimals.