This calculator finds the probability of obtaining a certain value for a sample mean, based on a population mean, population standard deviation, and sample size. Simply enter the

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Probability of drawing a blue and then black marble using the probabilities calculated above: P (A ∩ B) = P (A) × P (B|A) = (3/10) × (7/9) = 0.2333 Union of A and B In probability, the union of events, P (A U B), essentially involves the

Under the same conditions you can use the binomial probability distribution calculator above to compute the number of attempts you would need to see x or more outcomes of interest (successes, events). For example, if you know you

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How to calculate probability in sampling distribution? Define your population mean (μ), standard deviation (σ), sample size, and range of possible sample means. Input those

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Unlike the case of the mean, the standard deviation of sample means can be calculated using the formula: s (\bar X) = \displaystyle \frac {\sigma} {\sqrt n} s(X ˉ) = nσ Calculators Related to the normal distribution

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