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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 probability of drawing a spade and a diamond in any order?
Assume that you start with a well-shuffled regular 52-card deck (no jokers) and draw 2 cards.
The first card can be either a spade or a diamond, giving you 26 possibilities out of the 52 cards, for a probability of 26/52 or 1/2.
The second card must be of the other desired suit, giving you 13 possibilities out of the 51 remaining cards, for a probability of 13/51.
The total probability is then the product of the two, 1/2 x 13/51 = 13/102, or about 12.74%.
What is the probability of flipping a coin 3 times and getting 3 heads?
The probability of flipping a coin 3 times and getting 3 heads is 1/2
What does a large standard deviation of the equilibrium constant mean?
It means that equilibrium may be attained at widely separated values.
What does it mean normal distribution?
The Normal distribution is a probability distribution of the exponential family. It is a symmetric distribution which is defined by just two parameters: its mean and variance (or standard deviation. It is one of the most commonly occurring distributions for continuous variables. Also, under suitable conditions, other distributions can be approximated by the Normal. Unfortunately, these approximations are often used even if the required conditions are not met!
What does it mean when data is normally distributed?
It means that the data are distributed according to a probability distribution function known as the normal distribution. This site is useless for showing most mathematical functions but you can Google "normal distribution" to get more details.
What is the probability of rolling two dice and the sum is not divisible by 3?
Prob(Sum is not divisible by 3) = 24/36 = 2/3
What is the outcomes of group therapy?
There are no sure and positive outcomes. Group therapy will help some people and fail with others.
Is standard deviation biased or unbiased?
Standard deviation (SD) is neither biased nor unbiased. Estimates for SD can be biased but that depends on the formula used to calculate the estimate.
What is the sample space of 2 red and 5 yellow marbles?
The sample space of an experiment would be the set of all possible outcomes. If you are reaching your hand into a bag and pulling out a marble at random, the outcomes will either be (red)(red)(yellow)(yellow)(yellow)(yellow)(yellow). This gives seven different options. This will obviously change each time a marble is removed or added.
i dont know
When an event's probability depends on the likelihood of another event. the probability is what?
It is dependent.
What does it mean to have a probability of 0.05?
It means that there is a probability or chance of 0.05 or 1 in 20 of observing the relevant event.
There are 230300 ways.
What is the probability of getting five questions correct on a 20 question multiple choice test?
The answer depends on the number of choices available for each question.
Pr(Windy given not Sunny) = Pr(Windy and not Sunny)/Pr(not Sunny)
= 0.2/(1 - 0.3) = 0.2/0.7 which rounds to D 29%
What are the odds of dying before 59?
There are very many factors that affect the odds and it would be pointless giving a general figure. The relevant factors include your:
- gender,
- genes - longevity or otherwise in the family, susceptibility to certain diseases,
- current age,
- health so far, fitness,
- country that you live in,
- socio-economic class.
What are the odds of drawing a diamond from a ordinary deck of cards?
The probability, if you draw 40 cards, without replacement, is 1. That is, it is a certainty.
The probability on a single random draw is 1/4.
How many simple random samples of size 5 can be selected from a population of size 35?
There are 324,632 possible samples.
