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What is the probability of a coin tossed 3 times landing heads up 3 times?
Wiki User
∙ 14y ago
The is a binomial probability problem, The chance of heads=chance of tails=.5 The general formula for binomial probability is nCrxp^rq^n-r where p is a success and r is a failure. In this case it is 3C3x.5^3 which is 1x.125 so the answer is .125 Another way to think of this problem is the chance of heads is .5 on one toss. If we throw the coin again, the chance of heads is still .5 since this is an independent even and similarly for the third time. So the chance of 3 heads is .5x.5x.5=.125. A more concrete way to see this is List all possible outcomes in the sample space. This time consuming for large n, but for 3 we can do it. HHH, HTH, HHT, THH, HTT, THT, TTH, TTT so there are 8 or 2^3 possible outcomes. Only one of those is 3 heads so 1/8=.125
Wiki User
∙ 14y ago
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If a coin is tossed for 30 times what is the probability of having 10 heads?
10 :)
What is the probability of the coin landing heads up twice and tails up one?
What is the chance of it landing on heads twice in a row?
What is the probability of landing on heads 6 times?
The probability is 6 in 12, or 1 in 2.
What is the probability of a coin tossed five times to get four heads?
It is 5/32 = 0.15625
If a coin is tossed 4 times and heads comes up all 4 times the probability of getting heads on the fifth try is?
0.5, 1/2, 50% The probability for heads versus tails does not change based on the amount of times the coin is tossed. It will always be a 50% chance.
What is the probability that a coin that is tossed 10 times--- what is the probability of it landing on heads 10 times?
0
What is the probability of a coin landing heads up twice and tales up once if tossed 3 times?
2:3...
What is the probability that a coin that is tossed 10 times what is the probability of it landing on heads 10 times?
The probability is 0.09766%.Each toss has a ½ chance to be heads. To combine probabilities use multiply them. So the probability to get two heads out of two tosses is ½ * ½, and three heads out of three tosses is ½ * ½ * ½. So the exact answer is 0.5^10
What is the probability of a coin tossed two times to get heads?
It is 3/4
If a coin is tossed for 30 times what is the probability of having 10 heads?
10 :)
A coin is tossed 60 times It landed on heads 21 times what is the experimental probability of getting heads?
1/2
What is the probability of the coin landing heads up twice and tails up one?
What is the chance of it landing on heads twice in a row?
What is the probability of landing on heads 6 times?
The probability is 6 in 12, or 1 in 2.
What is the probability that I'll get heads on the next toss if I tossed a coin fifteen times and got heads twelve?
The odds are 50/50. A tossed coin does not have a memory.
What is the probability of a coin tossed five times to get four heads?
It is 5/32 = 0.15625
A coin tossed six times what is the probability of getting two heads?
1/36
If a coin is tossed 4 times and heads comes up all 4 times the probability of getting heads on the fifth try is?
0.5, 1/2, 50% The probability for heads versus tails does not change based on the amount of times the coin is tossed. It will always be a 50% chance.
