Probability of rolling a certain number or less with one die

- What is the probability of rolling the same number twice?
- When rolling a standard number cube twice what is the probability of rolling two even numbers?
- What is the probability of rolling a 2 on a number cube?
- When rolling a standard number cube twice what is the probability of rolling a multiple of 3 both times?
- What is the probability of rolling a multiple of 3 on a standard die?
- What does it mean to roll a multiple of 3?
- What is the probability of rolling a multiple of 5?
- What is the probability of rolling factors of 6?
- What is the probability of not rolling a 2?
- How do you solve random probability?
- What does random mean in probability?
- How will you find the probability to each value of a random variable?
- What is the difference between the two types of random variable?
- Which of the following is the range of a random variable?
- What is expected value of a random variable?
- What is random experiment as used in probability?

## What is the probability of rolling the same number twice?

The second roll of the dice has to match the outcome of the first, so that has a probability of 1/6. The probability of both events occurring is 1 * 1/6.

## When rolling a standard number cube twice what is the probability of rolling two even numbers?

3 Answers By Expert Tutors A cube has six sides. If they are numbered 1, 2, 3, 4, 5, 6 (six possibilities) and the even ones (2, 4, 6) are successes, then the probability of rolling an even number on the first roll is 3/6 = 1/2. (1/2)2, assuming you mean a standard die.

## What is the probability of rolling a 2 on a number cube?

1/6

## When rolling a standard number cube twice what is the probability of rolling a multiple of 3 both times?

a) rolling a 3 twice. In the first roll you get a 3, with a probability of 1/6, and with the second roll you also get a 3, also with a probability of 1/6.

Roll a…or less | Probability |
---|---|

1 | 1/6 (16.667%) |

2 | 2/6 (33.333%) |

3 | 3/6 (50.000%) |

4 | 4/6 (66.667%) |

## What is the probability of rolling a multiple of 3 on a standard die?

1/3

## What does it mean to roll a multiple of 3?

The options of having a multiple of 3 is having 3 or 6 which is 2 chance. Then the probability would be the chances of having a multiple of 3 of the 6 faces of the die which is 6. Then the probability is 2/6=1/3. Approved by eNotes Editorial Team.

## What is the probability of rolling a multiple of 5?

29

## What is the probability of rolling factors of 6?

4/6

## What is the probability of not rolling a 2?

25%

## How do you solve random probability?

For example, if you were to pick 3 items at random, multiply 0.76 by itself 3 times: 0.76 x 0.76 x 0.76 = . 4389 (rounded to 4 decimal places). That’s how to find the probability of a random event!

## What does random mean in probability?

Random event/process/variable: an event/process that is not and cannot be made exact and, consequently, whose outcome cannot be predicted, e.g., the sum of the numbers on two rolled dice. 5. Probability: an estimate of the likelihood that a random event will produce a certain outcome. B.

## How will you find the probability to each value of a random variable?

Example. Suppose a variable X can take the values 1, 2, 3, or 4. The probability that X is equal to 2 or 3 is the sum of the two probabilities: P(X = 2 or X = 3) = P(X = 2) + P(X = 3) = 0.3 + 0.4 = 0.7. Similarly, the probability that X is greater than 1 is equal to 1 – P(X = 1) = 1 – 0.1 = 0.9, by the complement rule.

## What is the difference between the two types of random variable?

Random variables are classified into discrete and continuous variables. The main difference between the two categories is the type of possible values that each variable can take. In addition, the type of (random) variable implies the particular method of finding a probability distribution function.

## Which of the following is the range of a random variable?

The range of a random variable X, shown by Range(X) or RX, is the set of possible values for X. In the above example, Range(X)=RX={0,1,2,3,4,5}. The range of a random variable X, shown by Range(X) or RX, is the set of possible values of X. Find the range for each of the following random variables.

## What is expected value of a random variable?

The expected value of a random variable is the weighted average of all possible values of the variable. The weight here means the probability of the random variable taking a specific value.

## What is random experiment as used in probability?

Probability – Part I. Definition : A random experiment is an experiment or a process for which the outcome cannot be predicted with certainty. Definition : The sample space (denoted S) of a random experiment is the set of all possible outcomes.

What is the probability of rolling either a 2 or a 3 on a six-sided die?

## No Comments