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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 skills do you need to be a kindergarten teacher?
well, you have to be patient, thoughtful, kind, and you gotta reduce your temper
A card drawn from 52 cards the probability of getting a face card or spade?
The probability of drawing a spade is 1/4 (13/52).
The probability of drawing a face card is 3/13 (12/52).
The probability of drawing a spade face card is 3/52 (3/52).
13 + 12 - 3 = 22
The probability of drawing a spade or a face card is 11/26 (22/52).
If you draw a card from a standard deck of cards what is the probability of drawing a nine?
There are 4 nines in a 52 card deck so the probability of drawing a nine is 4/52 or 1/13.
Which is 7%
What is the probability of a homozygous recessive offspring?
It depends. If it's a heterozygous cross, (Tt x Tt), there's a 25% chance. If it's a homozygous dominant cross (TT x TT), the chance is 0%. Neither parent has the alleles for a recessive trait, so none of their offspring can have the recessive trait. If it's a homozygous recessive cross (tt x tt), there's a 100% chance. The only alleles the parents can pass on are recessive.
What is the probability of getting a 1 or 2 on a six sided dice?
The probability of landing on any 1 given number is 1:6. Specific numbers don't matter. It is all odds.
Just multiply by two so that we get a 2:6 probability that you will land on a 1 or 2. this reduces to 1:3 or 33.3%
First probability of getting 2 is one in six: 1/6
probability of getting no greater than 4 is two chances in six (must be a 5 or 6): 2/6=1/3
so probability = 1/6*1/3= 1/18.
How do you calculate the expected value when you know the standard deviation?
You cannot; there is insufficient information.
If the probability of winning a lottery is 7 in 1000000 what's the probability of not winning?
999,993 in 1,000,000.
What is the probability of rolling 6 or less if two dice are rolled once?
The probability is 1, if the dice are rolled often enough.
In a family of 5 what is the probability that you will have 3 girls (please show your work)?
The probability of a female is approx 0.4831 across the world. If you assume (rather dubious) that the genders of children in a family are independent then the probability is approx 0.3012
In a family of 5, the probability of 3 girls and 2 boys is
5C3*(0.4831)3*(0.5169)2 = 0.3012
What is the probability that at least one coin will be tails?
The answer depends on how many coins were tossed.
What is the chance of drawing an ace any suit in a single draw from a full deck of card?
4/52, as there are four aces, and fifty-two cards.
What is the interpretation of probability?
It is a measure of the likelihood of a specified event occurring in an experiment.
What are the chances of having a girl after four boys in a row?
Just about 50/50. The sex of earlier children has no bearing on the sex of the next child to be born. Each pregnancy has a (just about) even chance of being a boy or a girl.
What is the probability of getting a seven on either of two rolls with a nine sided die?
It's 1/9 on the first roll and 1/9 on the second roll, so you have
a 2/9 = 22.22% chance of success on either one or the other.
1:30
What is the probability of flipping a coin four times and getting the same side all four times?
Each flip has two possible outcomes and they are independent events, so there are 24 = 16 possible results.
Of these, only 2 (HHHH, TTTT) are the same 4 each time, Thus:
probability = 2/16 = 1/8
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 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.
