Probability

There are two cards which ahve a value of eight which are black (spades and clubs). Each of these cards has two black numeral eights (8) for four black numeral eights in the deck

A standard number cube has numbers 1-6, so there's a 50% (or one-half) chance of rolling both an odd or even number.

The probability of drawing a jack or a queen from a standard deck of 52 cards is ((1 + 1) times 4 ) in 52, which is 8 in 52, or about 0.1538.

There are 12 two letter arrangements of the letters in PARK.

Yes.

462 ways
Explanation

In the question, it does not seem to matter how many boys or girls are on a team. So really you are asking how many ways are there to divide 12 people into two teams of 6.

The answer is (12C6)/2 where 12C6 means 12 choose 6

First 12 chose 6 is 12!/(12-6)!(6)! which is 12x11x10x9x8x7x6x5x4x3x2x1/(6x5x4x3x2x1)(6x5x4x3x2x1)=
(12x11x10x9x8x7)/(6x5x4x3x2x1)=924


(As a side note, the Google browser will calculate these numbers if you just type in 12 choose 6, for example)

Now once one team of 6 is chosen, the other team is automatically the remaining 6 so we have really double counted. That is why we divide by 2 and the answer
is 462 ways.

This question can only be answered if the probability distribution functions of X1, X2 and X3 are known. They are not and so the question cannot be answered.

Any number that you like: it depends how high the asphalt is stacked!

http://en.wikipedia.org/wiki/Statistical_power

12/52nd

The probability of drawing some card from the first deck is 1 in 1. The probability of matching that card in the remaining three decks in 1 in 52 for each. Simply multiply 1/1 by 1/52 by 1/52 by 1/52 and you get 1 in 140608.

Genetics often involves dominant and recessive alleles. For instance, blue eyes are recessive and brown eyes are dominant.1 Each parent contributes one allele. If you get two blues, then your eyes are blue. If you get one or two browns, then you eyes are brown. That means that, given a random contribution from your parents, you have a 25% probability of blue eyes.

It also means that, even though you have brown eyes, you could be carrying the blue allele, and two parents with brown eyes could have a blue eyed child.

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1Its more complicated than that, since eye color is actually polygenic, involving more than one allele. This example was simplified to answer the question.

3 of them.

In a room of just 23 people there's a 50-50 chance of two people having the same birthday. In a room of 75 there's a 99.9% chance of two people matching birth dates.

The probability of a fair coin landing on heads or tails is even, i.e. 50/50.

iam not saying this is not a good way of finding out things this way you'd get worried and some people lie on this website so ask your own doctor and see what he says!!

4/52 reduced is 1/13.......

The statement is true that a sampling distribution is a probability distribution for a statistic.

These are unrelated events, so simply multiply them. 3 in 6, or 0.5 for the die, and 1 in 2, or 0.5 for the coin, multiplied together gives you 0.25.

3 out of 8

4 because 2 red 2 black

The probability of drawing the Ace of Spades on the first draw is 1 in 52. The probability of drawing the Queen of Hearts on the second draw is 1 in 51. The probability of both of those event occurring is 1 in 2652. (1 in 52) times (1 in 51)

The probability is 1:1 (1 in 1) or 100% (by calendar definition).

no