Calculating Binomial Probability: Understanding Output

In summary, the formula for calculating binomial probability is P(x) = nCx * p^x * (1-p)^(n-x), and the output represents the probability of getting a certain number of successes in a given number of trials. Binomial probability and binomial distribution are different in that the former is a single value while the latter is a range of values. Binomial probability can be applied in various real-world scenarios and has certain assumptions that must be met for accurate calculations.
  • #1
imiyakawa
262
1
Hi, I'm using a website (http://stattrek.com/Tables/Binomial.aspx) to calculate binomial probability, and I cannot understand it's output.

Consider:
1.13860032513458E-11

Does this mean 1.13860032513458^[e*(-11)]

Thanks
 
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  • #2
No, it would mean [itex] 1.13860032513458 \times 10^{-11} [/itex]
 

FAQ: Calculating Binomial Probability: Understanding Output

What is the formula for calculating binomial probability?

The formula for calculating binomial probability is P(x) = nCx * p^x * (1-p)^(n-x), where P(x) is the probability of x successes in n trials, nCx is the number of combinations of x successes in n trials, p is the probability of success in a single trial, and (1-p) is the probability of failure in a single trial.

How do I interpret the output of a binomial probability calculation?

The output of a binomial probability calculation represents the probability of getting a certain number of successes (x) in a given number of trials (n), with a specific probability of success (p) for each trial. It is typically expressed as a decimal or a percentage.

What is the difference between binomial probability and binomial distribution?

Binomial probability refers to the likelihood of getting a certain number of successes in a specific number of trials, while binomial distribution refers to the pattern of probabilities for all possible numbers of successes in a given number of trials. In other words, binomial probability is a single value, while binomial distribution is a range of values.

How can I use binomial probability in real-world scenarios?

Binomial probability can be used in various real-world scenarios, such as predicting the outcome of a series of independent events, estimating the success rate of a marketing campaign, or determining the chances of winning a game of chance. It is also commonly used in scientific research to analyze data and test hypotheses.

What are the assumptions of binomial probability calculations?

The assumptions of binomial probability calculations are that each trial is independent, there are only two possible outcomes (success or failure), the probability of success remains constant for each trial, and the trials are performed under identical conditions. Violation of these assumptions can affect the accuracy of the calculations.

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