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Probability

The probability of a certain event is a number expressing the likelihood that a specific event will occur, expressed as the ratio of the number of actual occurrences to the number of possible occurrences. In mathematics, it is a measure of how often an event will happen and is the basis of statistics.

14,643 Questions

How can you increase your chances of having twins?

Fertility drugs that cause more than one egg to mature at ovulation or in vitro fertilization.

Identical twins are caused by unknown factors, when the developing zygote splits in two. Fraternal twins seem to run in some families.

We are not made to carry more than one baby per pregnancy and carrying twins is much more risky for both mom and the babies.

Since the Octomom nightmare two years ago, doctors are being urged not to implant more than one zygote per cycle - the chances of pregnancy seem to be the same (according to British fertility doctors) and the risks are much lower.

What are the chances of drawing a card from a deck and not getting a club?

Provided the choice is totally random, because there are 52 cards in a standard pack, the chances of drawing a club is

13/52

(25%)

so, therefore the chances of not getting a club are 75% or 39/52

What is the function of the clitellium?

A thickened section on earthworms that contains male and female sex organs. After exchange of sperm takes place between two different worms, a mucus and chitin cocoon forms around the female pores and fertilized eggs are deposited.

Where can one get a rolling chassis?

One could get a rolling chassis from somewhere such as Amazon or eBay. One could also purchase on from auto trader magazines and classified ads if they are advertised.

What is skewness and How would you find it in a non symmetrical distribution?

If a random variable X has mean value m, and standard deviation s, then

Skewness = E{[(x - m)/s]3}

which can be simplified to

skewness = [E(X3) - 3ms2 - m3]/s3

and for discrete X, E(X3) = sum of x3*Prob(X = x) where the summation is over all possible values of x.

While for continuous X, E(X3) = integral of x3*f(x) where the integral is over the domain of X.

Why there is a fraternal and the identical twins?

If two eggs are fertilsed you get fraternal twins whereas if one egg is fertilised and that develops into two individuals, you get identical twins.

What is the probability against drawing a 7 from a deck of 52 cards?

There are 4 7's in the deck so divide 52 by 4 which is 13 so you have a 1 in 13 chance of picking any card.

12 in 13

What is the probability that has the same probability?

What is the probability that this question makes absolutely no sense?

1/1.

or

100%

How many mutilple of 2 cards are they in a deck of 52?

multiples of 2: 2, 4, 6, 8. 10

number of spade with multiples of 2........... 5

number of heart with multiples of 2 ............5

number of diamond with multiples of 2........5

number of spade with multiples of 2 ...........5

===============================

total number of cards with multiple of 2.....20 cards

When rolling two dice what is the probability of the sum being 4?

Listing all possible outcomes:
Dice 1 Dice 2 Sum
1 1 2
1 2 3
1 3 4
1 4 5
1 5 6
1 6 7
2 1 3
2 2 4
2 3 5
2 4 6
2 5 7
2 6 8
3 1 4
3 2 5
3 3 6
3 4 7
3 5 8
3 6 9
4 1 5
4 2 6
4 3 7
4 4 8
4 5 9
4 6 10
5 1 6
5 2 7
5 3 8
5 4 9
5 5 10
5 6 11
6 1 7
6 2 8
6 3 9
6 4 10
6 5 11
6 6 12

Only 3 out of the possible 36 combinations turned out to have a sum of 4. So that is 1/12

The faster mental way:
You know a standard dice has 6 sides.
In this problem, there are two die. So that means you have to multiply 6 x 6. That is 36.
So there are 36 possible outcomes.
You know 1 + 3 = 4, 3 + 1 = 4, and 2 + 2 = 4. Those are the only 3 equations that have all positive numbers that have a sum of 4 (Zero is not positive nor negative).
You have your answer. 3/36. In simplest form, it is 1/12.

What is the probability of being dealt a Blackjack?

When the deck is full, this probability is 4/52 (the probability of getting one of 4 aces) times 16/51 (the probability of getting one of 16 kings, queens, jacks, or tens) times 2 (the number of orders in which you could get these cards: ace first, or ace second). This comes out to 32/663, or about 4.83%. Of course, this probability changes as the game progresses: it decreases when any of the tens, jacks, queens, kings, or aces get discarded, but increases when other cards get discarded. This change is unpredictable, but its expected value is 0; this is a complicated concept to explain, but it means that on average, the probability will go up as much as it goes down. Also, the probability is still 32/663 at any point in the game if you have no information whatsoever about what cards came up before: if you forgot every card you saw, or if you just joined the game.

The political viewpoint of a newspaper can be learned by reading the?

The political viewpoint of a newspaper can be learned by reading the editorial page.

Can identical twins be successful in business?

yea why not what would that have to do with it anybody can accomplish anything if they put there mind to it

What is the probability of a number that is selected randomly from the set of integers between one and fifty to be divisible by 7?

If we include both 1 and 50 there are 50 numbers to choose from. The numbers that are divisible by 7 in that range are 7, 14, 21, 28, 35, 42,and 49. There are 7 of them.

So the answer would be 7 out of 50, which is 14%.

What sound would the rolling of dice make?

what ever sound you want it to be like blbsdfnigafjna that is a good example of the sound a rolling dice would make by dahc and nedyaj read these names backwards dice roller hahahahahahahah` dahc killed your dog/cat maybe your donkey

now can you answer my question is your dog dead

How do you use mental math to solve 80 divided by 40?

80 divided by 40 is the same as 8 divided by 4, which is two.

What is the probability of flipping a coin and having it land on heads two times in a row?

We have no way of knowing the probability of any given person flipping

any given coin at any given time. But for any two flips of an honest coin,

the probability that both are tails is 25% . (1/4, or 3 to 1 against)

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