Q: If you roll a fair die 30 times how many times do you expect to roll a 5?

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He should expect it 100 times.

You can expect to get a 5 about 15 times out of 90.

Possible outcomes of one roll = 6Successful outcomes = 1Probability of success on each roll = 1/6Expectation in 150 rolls = (1/6) x (150) = 25 times

If you roll a die 100 times, you would expect to get a 1 about 17 times, because the probability of getting a 1 is 1 in 6, or 0.1667. However, that is theoretical probability; experimental probability - the actual results of doing this 100 times - might not be 17, but if you did this a large number of times, the experimental results would indeed begin to approach the theoretical results.

If you roll a fair, six sided die 100 times, you would expect to see each face one out of six times, or about 17 times. Statistically, however, you will see variation in the results, because 100 trials is far, far too small to even come close to the theoretical distribution.

Related questions

Never. If you roll it 1 time, there can be no "then".

With a fair die, you would expect it 60*(1/6) = 10 times.

Type your answer here... 15

He should expect it 100 times.

A fair cube 60 times.

The answer depends on how many times a die is rolled and whether it is a fair die.For a single roll of a fair normal die, the answer is 2/3.The answer depends on how many times a die is rolled and whether it is a fair die.For a single roll of a fair normal die, the answer is 2/3.The answer depends on how many times a die is rolled and whether it is a fair die.For a single roll of a fair normal die, the answer is 2/3.The answer depends on how many times a die is rolled and whether it is a fair die.For a single roll of a fair normal die, the answer is 2/3.

60

You can expect to get a 5 about 15 times out of 90.

90

If George rolls the die 300 times, how many fives will he roll?

50

1/6 or 300=4