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โˆ™ 2012-04-18 01:16:49
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Probability

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Q: What is the probability of a coin landing on heads twice when it is flipped 2 times?
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What is the probability of a coin landing on heads when it is flipped 100 times?

The probability of landing on heads at least once is 1 - (1/2)100 = 1 - 7.9*10-31 which is extremely close to 1: that is, the event is virtually a certainty.


How do you find experimetal probability?

Experimental probability is calculated by taking the data produced from a performed experiment and calculating probability from that data. An example would be flipping a coin. The theoretical probability of landing on heads is 50%, .5 or 1/2, as is the theoretical probability of landing on tails. If during an experiment, however, a coin is flipped 100 times and lands on heads 60 times and tails 40 times, the experimental probability for this experiment for landing on heads is 60%, .6 or 6/10. The experimental probability of landing on tails would be 40%, .4, or 6/10.


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 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 that a coin that is tossed 10 times--- what is the probability of it landing on heads 10 times?

0


You flip a coin nine times and obtain ttttttttt if you flip the coin one more time what is the probability of getting h?

The probability of a flipped coin landing heads or tails will always be 50% either way, no matter how many times you flip it.


Probability of a coin landing on heads if done 100 times?

The probability is 0.5 regardless how many times you toss the coin."


If a coin is flipped twice what is the probability that both will be heads?

The sample space is HH, HT, TH, HH. Since the HH combination can occur once out of four times, the probability that if a coin is flipped twice the probability that both will be heads is 1/4 or 0.25.


What is the probability that a coin flipped four consecutive times will always land on heads?

The probability that a coin flipped four consecutive times will always land on heads is 1 in 16. Since the events are sequentially unrelated, take the probability of heads in 1 try, 0.5, and raise that to the power of 4... 1 in 24 = 1 in 16


What is the probability of getting heads at least once if a fair coin is flipped three times?

7/8


In a probability experiment Eric flipped a coin 36 times. The coin landed on heads 24 times. What is the ratio of heads to tails in this experiment?

2 to 1


A coin is biased so that the probability a head comes up when it is flipped is 0.6 What is the expected number of heads that comes up when its flipped 10 times?

Multiply the probability by the number of times the experiment was carried out. 0.6x10=6

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