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70 % of the Hockey referees freeze the pucks before the game. If 8 referees are chosen at random what is the probability that exactly 5 of them freeze the puck before the game?
A) 70 %
B) 8 %
C) 5%
D) 15 %
E) 25 %
Answer: E
8C5*(0.7)^5*(0.3)^3
8C5 = 8!/{(8-5)!*5!} = 56
560.1680.027 = 0.254 ≈ 0.25 = 25%
This problem is from Math Destroyer.
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A) 70 %
B) 8 %
C) 5%
D) 15 %
E) 25 %
Answer: E
8C5*(0.7)^5*(0.3)^3
8C5 = 8!/{(8-5)!*5!} = 56
560.1680.027 = 0.254 ≈ 0.25 = 25%
This problem is from Math Destroyer.
If you are preparing for the DAT, strong probability fundamentals matter.
Learn more here:
Math Destroyer
DAT Destroyer
For free daily practice, join our DAT Destroyer Study Group:
