anonymous
  • anonymous
When a coin is flipped, there are two possible outcomes: heads or tails. If a coin is flipped three times, what is the probability that there will be tails all three times?
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
I can post the possible answers if necessary
anonymous
  • anonymous
Don't post possible answers.
anonymous
  • anonymous
OK

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kropot72
  • kropot72
The 3 flips are independent trials each with a probability of 1/2 for tails. Probability of 3 tails in a row is \[\frac{1}{2}\times \frac{1}{2}\times \frac{1}{2}=you\ can\ calculate\]
mathstudent55
  • mathstudent55
Figure it out yourself the same we did the previous question. Write a table with all possible outcomes. Then see what fraction your desired outcome is of the total number of outcomes.
anonymous
  • anonymous
0.125
anonymous
  • anonymous
Thanks!
kropot72
  • kropot72
You're welcome :)
mathstudent55
  • mathstudent55
|dw:1364251372872:dw| There are 8 possible outcomes, and only 1 is three tails, so the probabilty of three tails is 1/8

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