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7 Cards in this Set
- Front
- Back
binomial probability function
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used when all outcomes can be categorized as either successes or failures.
Can also be used with finite populations when sampling is with replacement |
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compound or joint probability
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dependent events for which probability is conditional
ex. -drawing objects from a container -cards from a deck -->without replacement P(A|B) = P(A) if events are independent |
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Birthday Problem
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P(k distinct birthdays)
(365/365)*(364/365)*...*((365-k)/365) |
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exactly 2 people in a group of 5 share a birthday
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C(5,2) * (365) * (1/365)^2 * (364/365) * (363/365) * (362/365)
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Confidence Interval
(Sampling Distribution Known) |
| L-μ |
------- |σ/√n| |
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Hypothesis testing - how many tails?
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one-tail = average has or has not increased or decreased
two-tail = average has or has not changed |
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variance
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standard deviation squared
s - sample std deviation (n-1) σ - population std deviation (N) |