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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

What is the definition of a correlation?

A parallel relationship with something, like pollen and allergy, dog and barking, wind and storm.

How can you improve the chances of having twins?

There are two primary types of twins, Identical and Fraternal.

Identical twins occur when the egg splits after fertilization. To date no indication of a genetic link has been found. Anyone has a chance, though small, of having identical twins.

Fraternal twins occur when more than one egg is dropped during ovulation. This trait can be inherited from the mother's side of the family. Studies have shown that the chances are also increased by being overweight or older.

A set of 1000 values has a normal distribution the mean of the data is 120 and the standard deviation is 20 how many values are within one standard deviaiton from the mean?

The Empirical Rule states that 68% of the data falls within 1 standard deviation from the mean. Since 1000 data values are given, take .68*1000 and you have 680 values are within 1 standard deviation from the mean.

What is the scion ethnicity?

Not sure as to what you mean but scion means follower or disciple (...and it's usually used in a religious context...), and ethnicity means a group of people, so my best guess would be it means those who follow a religion.

A committee of 4 people is to be formed from a group of 15 employees How many different committees are possible?

This is a combination problem; use the nCr formula.

nCr = 15! / ((15-4)!*4!)

nCr = 15! /(11!*4!)

nCr = 1365

If the letters of computer are randomly arranged in all possible ways what is the probability the word begins by a vowel?

If the letters of computer are randomly arranged in all possible ways, the probability the word begins with a vowel in five out of 26, or 0.1923. You do not need to consider any other letters, or any permutations or combinations, because you only asked about the first letter.

What is the answer to c plus 8 equals 11?

c plus 8 equals 11; now subtract 8 from both sides, then c=3.

What is the anwer in getting the probability of a die less than 7?

As the maximum value of the dots on the face of a traditional dice is 6 the probability of throwing A die with the value of less than 7 is 100%.

What is probability of a total of 4 when rolling 2 six sided dice?

It is 1/12.

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If you think of one die being red and the other green, there are 6x6 = 36 different outcomes. Of these, 3 give a total of 4: a two on both dice, a red 1 and a green 3, or a red 3 and a green one. The answer is 3/36 = 1/12, or about 0.083.

What is the probability that you flip a head after you flipped 100 coins and 87 were heads and 13 were tails?

50%

Every time you flip a coin, there is a 50% chance it will come up heads and a 50% chance it will come up tails, no matter how many times you have already flipped it, and no matter what the results were of previous flips.

What is the probability of drawing a heart or a king ina regular deck of cards?

There are 13 Hearts (including a King) and 3 extra Kings (a total of 16 cards) in the 52 card pack, so the probability of drawing a Heart or a King is 16/52 = 4/13 = 0.3077 or 30.77%

What is better a bag of marbles or a movie?

bag of marbles is better if it fits in your word search but if it doesn't movie is better

A family has five children The possibility of having a girl is 1 over 2 What is the probability of having 3 girls followed by 2 boys?

There is no proper answer to the question. The children's gender are not independent events: they are affected, among other things by the father's genes and the mother's age. Also, the true probability of a girl is 0.48, not 0.5.

However, if you ignore reality, then the answer is (1/2)5 = 1/32.

Who would probably be the last gentile?

The Anti Christ. After that, all people will be believers.