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Answered 2014-04-29 11:48:52

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

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If i roll a die 90 times how many times can i expect to roll a 6?

pr(six) = 1/6 → expected 6s in 90 rolls = 1/6 × 90 = 15



How do you get if you roll a die 100 times how many times would you expect to get 1?

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.


What is the probability that you roll a number less than five?

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.


How many times would you have to roll one die to roll a six five times?

If you were really unlucky, infinitely many times! The probability of that happening is very tiny but it is not zero.


What is the expected number if you roll a die three times?

The expected value if you roll a die three times is 3.5.


What is answer to Beth throws a die 80 times. Write an estimate of the number of times that you would expect Beth to throw a 6?

If the dice or die are 6 sided, then you would most likely roll a 6 13.33333 times, which rounds to 13.


What percent of the time will you get a 1 if you roll a die 60 times?

16.66... % of the time - if the die is fair. And the percentage is not affected by the number of times you roll it.


If you roll a die 30 times how many times should you expect to roll a number less than 3?

The expected number of rolls under 3 is the number of rolls times the probability of rolling less than 3. So: E(rolls less than 3 out of 30) = 30 * 1/3 = 30/3 = 10


If the dice is rolled 450 times how many times would you expect to get 4?

The probability of rolling a four on a single roll of a fair die is 1/6. So the expected number of 4s in 450 rolls is 450*1/6 = 75.


How many prime numbers would you expect to get in 300 rolls of a die?

Total possible outcomes of one roll = 6Number of primes on the die = 3 (2, 3, and 5)Probability of a prime on each roll = 3/6 = 50% .So, in 300 rolls of a fair die, you would expect approximately 150 primes.


How do you determine the fairness of a die?

Roll the die a large number of times, recoding the outcome of each roll. If the die were fair you would expect to get each number a sixth of the time. You then test how well your results match these expectations. There are several statistical tests (the chi-square being the most powerful) which will do this.


If A die rolled 260 times how many items will it roll 5 or 3?

Assuming a standard unbiased 6-sided die: The probability of 5 or 3 = 2/6 = 1/3 → The expectation when it is rolled 260 times is 260 × 1/3 = 86 2/3 → You would expect to see a 5 or 3 about 87 times when rolling a die 260 times


If you roll a fair six-sided die 1000 times Out of 1000 rolls how many times do you think the die would come up even?

If you roll a fair six-sided die 1000 times the die would come up even about 500 times. It will not be exactly 500 times, due to random probability, but it will be close. The more times you roll it, the ratio of even to odd will come closer and closer to the theoretical probability of 0.5.


If a dice is rolled 90 times what is the sum of the first and second roll expected to be on average?

If a DIE (not dice) is rolled 90 times, the expected value of the sum of the first and second rolls is 7 if you assume that the die is fair. It does not matter how many times you roll the die, as long as it is at least 2.


Roll a die 20 times?

3.33 is the probable chance of landing on any sides of a dies if you roll it 20 times.


Experimental probability of rolling the sum of 2?

That means that you should roll a die many times, count how often you get the number "2", then divide this by the total number of rolls. If the die is "fair" (no extra weight on one side), you would expect this experimental probability to be somewhere close to the theoretical probability of 1/6, at least, if you roll often enough.


What is the theoretical probability of rolling a 5 on a number cube if it is rolled 300 times?

The theoretical probability of rolling a 5 on a standard six sided die is one in six. It does not matter how many times you roll it, however, if you roll it 300 times, the theoretical probability is that you would roll a 5 fifty times.


How many times would you expect to roll a number less than 5 when you toss a die 360 times?

Since a cube has 6 sides, you have a 4 in 6 chance of getting a number less than 5 each time you roll the dice. You would take how many times you want to roll it (360), divide it by the number of sides (6), and multiply it by 4 since you know you have a 4 in 6 chance. So it should be 240. This is strictly mathematical though and you should not consider it accurate since there are many variables when rolling it.


Consider a die that is rolled what is the total number of possible outcomes?

It depends on the number of sides and how many times you roll it.



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