Binomial Distributions (4.2)

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Mathematics
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a binomial distribution?
Back
A binomial distribution is a probability distribution that summarizes the likelihood that a value will take one of two independent states (success or failure) across a fixed number of trials.
2.
FLASHCARD QUESTION
Front
What are the parameters of a binomial distribution?
Back
The parameters of a binomial distribution are 'n' (the number of trials) and 'p' (the probability of success on each trial).
3.
FLASHCARD QUESTION
Front
How do you calculate the mean of a binomial distribution?
Back
The mean (μ) of a binomial distribution is calculated using the formula: μ = n * p.
4.
FLASHCARD QUESTION
Front
How do you calculate the standard deviation of a binomial distribution?
Back
The standard deviation (σ) of a binomial distribution is calculated using the formula: σ = √(n * p * (1 - p)).
5.
FLASHCARD QUESTION
Front
What is the probability of getting exactly k successes in n trials?
Back
The probability of getting exactly k successes in n trials is given by the formula: P(X = k) = (n choose k) * p^k * (1 - p)^(n - k).
6.
FLASHCARD QUESTION
Front
What does 'n choose k' mean in the context of binomial distributions?
Back
'n choose k' (denoted as C(n, k) or nCk) represents the number of ways to choose k successes from n trials and is calculated as n! / (k!(n-k)!).
7.
FLASHCARD QUESTION
Front
What is the significance of independent trials in a binomial distribution?
Back
Independent trials mean that the outcome of one trial does not affect the outcome of another trial, which is a key assumption in binomial distributions.
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