The probability of getting a perfect score in a three-question true or false quiz is 100% if you studied and retained the subject matter and the questions addressed that subject.
If, however, you did not study, and you made pure guesses without any bias towards an answer partially based in your (now rather poor) knowledge, then the probability of getting any one question correct is 50%, so the probability of getting all three questions correct is 50% to the third power, or 12.5%.
.00000003
0.05 I think is the answer
False; the "or" is an additive property so the probability of rain or snow muse be greater than or equal to 0.65.
That depends a lot on the specific circumstances, of how you guess. For instance, if a test has true/false questions, the probability is 1/2; if it is a multiple-choice question with 4 options, the probability is 1/4; if there are 6 options, the probability is 1/6, etc.; if you have to calculate a number (and it is NOT a multiple choice question), the probability is rather low, indeed.
The statement is true that a sampling distribution is a probability distribution for a statistic.
If you answer randomly, 1 in 8.
The probability is (1/2)25 = 1/33554432 = 0.00000003, approx
The probability that he receives a perfect score is .5*.5*.5*.5 = 0.0625.
.00000003
0.05 I think is the answer
The probability of getting the first answer correct is 1/2 The probability of getting the first two correct is 1/2 * 1/2 = 1/(22) The probability of getting all 9 correct is 1/(29) = 1/512 which is just under 0.2%
False.
What is the probability of what?Guessing them all correctly?Getting half of the correct?Getting them all wrong?PLEASE be specific with your questions if you want WikiAnswers to help.
False; the "or" is an additive property so the probability of rain or snow muse be greater than or equal to 0.65.
False. A region in which there is a high probability of finding an electron is called an orbital in quantum mechanics, not a field.
No, it is not. It is a statement. It is false, but that is not relevant.
The probability of getting at least 1 answer correct = 1 - Probability of getting all answers correct.So in your case it for be P(at least 1 answer correct) = 1 - 1/256where 256 is your sample space, |S| = 2^8.