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What is the likelihood or chance that a specific outcome will occur out of a total number of outcomes will occur out of a total number of outcomes?
Wiki User
∙ 10y ago
Its probability.
Wiki User
∙ 10y ago
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What is a probability of an event?
Lets first start by defining some terms:Probability (P) in statistics is defined as the chance of an event occurring.Probability experiment is a chance process that leads to results called outcomes.An outcome is the result of a single trial of a probability experiment.A sample set is the set of all possible outcomes of a probability experiment.An event consists of a set of outcomes of a probability experiment. An event can be one outcome or more than one outcome. The event can be anything from flipping a coin, to rolling a die, to picking a card.The probability of any event (E) is:(# of outcomes in E) / (total # of outcomes in sample space)For example: Find the probability a die is rolled and you get a 4?We know that there are 6 possibilities when rolling a die. We can either rolled a 1, or a 2, or a 3, or a 4, or a 5, or a 6.Using the equation above:P(rolling a 4)= 1/6The event in this case is rolling a 4.
What is the probability of getting a number greater than 3 or an odd number if a die is rolled one time?
If the die is numbered 1,2,3,4,5,6, then the numbers you could roll on that time include: Odd Numbers: 1,3,5 Greater than 3: 4,5,6 Apparently, every number appears but 2, so there is a 1/6 chance of NOT getting the favorable outcome. The favorable outcome is the chance of prevailing in the event's request, and in this case, has a 5/6 chance of taking place. So.. the probability is 5/6 of a chance, 83.333%, or .83 of a chance, repeating 3.
What is the probability that if three dice are rolled simultaneously then two dice will come up with same number?
This depends on if you want at least two of the dice to be the same number, or exactly two of the dice to be the same number.For the first scenario: Roll the first die, and get a number. Roll the second die, and there is 1/6 chance that it'll be the same as the first one. Now if it's not the same (5/6 chance) then the third die has 1/6 chance of being the same as the first, and 1/6 chance of being the same as the second. So we have:1/6 + 5/6*(1/6 + 1/6) = [simplified] 4/9 or about 44.44%chance that at least two are the same.For the second scenario: With three dice, there are 216 possible outcomes (6 x 6 x 6). So we know that there is a 4/9 chance that 2 or more will be the same: (4/9)*216 = 96 outcomes. Now 6 of these outcomes will have all three dice the same, so subtract 6 from 96 = 90. There is a 90/216 = 5/12 or 41.67% chance that exactly two dice are the same.
Which is better a 0.05 level of significance or 0.01 level of significance?
0.05 level of significance indicates that there is a 5% chance (0.05) that, under the null hypothesis, the observation could have occurred by chance. The 0.01 level indicates that there is a much smaller likelihood of the event occurring purely by chance - much stronger evidence for rejecting the null hypothesis in favour of the alternative hypothesis.
What are the chances you are going to toss 2 pennies 20 times How many times do you expect the 2 pennies will come up 1 head and 1 tail?
The key to probability is to identify how many outcomes are possible. Put a bunch of pennies on the table and have your son move them around to indicate how many possibilities there are for arranging two coins. He will quickly find that he can have HH, TT, HT, or TH So tossing two pennies will work out in one of these arrangements -- no matter how many times they're tossed. Probability is a fraction: the number of outcomes that match the criteria [I call these 'winners'] over all possible outcomes. Each of the outcomes in the list, then, has a 1/4 chance of happening. However, 2 of the outcomes result in one head and one tail [the order doesn't matter], so we can group thise to give the 1head-1tail choice a total probability of 1/2 Once you have the basic fraction of probability, he can multiply that by the number of tosses to work out the specific answers for your questions above
What is Models that do not involve risk or chance?
Deterministic models are those that do not involve risk or chance. These models are based on known inputs and produce specific, predictable outcomes without any randomness or uncertainty. They are usually used when the outcome can be precisely determined based on the given information.
The chance of a certain outcome is called its?
The chance of a certain outcome is it's probability.
What is likelihood and severity?
Likelihood is the chance that something will happen. Severity is how bad it will be if it does happen.
Why is probability important to a scientist?
Some but not all scientific models are based on the ability to determine the likelihood that a given experimental outcome has happened by chance alone. If you have an accurate understanding of how the variables in the experiment change when nothing in particular is affecting them, then you have a way to establish some confidence that your outcome is the result of your experimental procedure and not the result of purely random events. The experimental 'lingo' is that the researcher has to determine if the 'Null Hypothesis' can be rejected. The Null Hypothesis is that the experimental outcome is not significantly different from what you would expect if the experiment had no effect at all.As an example, if the probability in the natural world is that some event will happen by chance only one tenth of one percent of the time, then when I observe that event as my experimental outcome, I can be reasonably sure that my procedure has brought about the event; it is so unlikely that it happened by chance. It is not perfect, but few scientific procedures are. This also highlights the importance of replicating studies or of doing meta-analyses of experimental data gathered in many experiments to further reduce the likelihood that observed outcomes are nothing more than chance events.
How do you spell likelihood?
You spelled it correctly. Chance. C-H-A-N-C-E.
What is the outcome of tossing a coin and spin a spinner labeled 1-4?
5
How does probability differ from actuality?
Probability is the chance of some outcome while actuality is the realistic chance and actual outcome of an event.
What is the likelihood that post partum depression will recur?
The likelihood of postpartum depression will recurr is more of a 50/50 chance
Are chance meetings predictable?
Chance meetings are inherently unpredictable because they occur spontaneously and without any prior planning or control over the circumstances. Factors such as timing, location, and individual choices play a significant role in determining the likelihood of a chance encounter. While one can increase the probability of running into someone by frequenting certain places or attending specific events, the exact outcome remains uncertain.
What is the likelihood that particular events will occur?
The likelihood of an occurrence is called its probability.Other terms associated with probability are chance, risk, and possibility.
What will a likelihood that a particular event will occur?
The likelihood of an occurrence is called its probability.Other terms associated with probability are chance, risk, and possibility.
What is the likelihood that a particular event will occur?
The likelihood of an occurrence is called its probability.Other terms associated with probability are chance, risk, and possibility.
