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10 cards from this deck
p̂ = x/n, ratio of successes to sample size.
It predicts larger group proportions from samples.
p̂ = number of successes / sample size.
Sample means approach a normal distribution as n increases.
n̂p ≥ 5 and n(1 - p̂) ≥ 5 must be met.
E(p̂) ≈ p̂, the expected sample proportion.
SD(p̂) = √(p̂(1-p̂)/n).
To convert p̂ to a z-score for probability calculations.
A z-score measures how many standard deviations a value is from the mean.
Predicting outcomes based on sample data.
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