SOLUTION: Find the probability for the experiment of tossing a coin three times. Use the sample space S = {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}. The probability of getting at least two

Algebra ->  Probability-and-statistics -> SOLUTION: Find the probability for the experiment of tossing a coin three times. Use the sample space S = {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}. The probability of getting at least two      Log On


   

Question 1180290: Find the probability for the experiment of tossing a coin three times. Use the sample space S = {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}.
The probability of getting at least two tails
Answer by math_tutor2020(3817) About Me  (Show Source):
You can put this solution on YOUR website!

"at least two" means "two or more"

The subset of cases where we get two or more tails is this: {HTT, THT, TTH, TTT}
We're listing out any outcome where T shows up twice or more.

We have 4 items in that set above. This is out of 8 total outcomes. The probability of getting two or more tails is 4/8 = 1/2.

Answer: 1/2