Review — Difficulty 9/10

Probability · Random variables

Review skills for this standard. Write answers where shown.

Together with a parent

1. P(A) = 0.9000000000000001, P(B) = 1. If independent, P(A∩B) = ___ 2. Binomial(n=17, p=0.5): P(X = 14) = ___ 3. E[X] for X with values {13, 15, 17} and equal probability ___

Written review

1. P(A) = 1, P(B) = 1.1. If independent, P(A∩B) = ___ 2. Binomial(n=19, p=0.5): P(X = 16) = ___ 3. E[X] for X with values {15, 17, 19} and equal probability ___ 4. Variance of a fair die roll: ___ 5. Conditional: P(A|B) when P(A∩B) = 0.38 ___ 6. Identify the distribution and parameters in context.

_See printable PDF for diagram._

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Skills checklist

• [ ] Computes probabilities from models
• [ ] Finds expectation and variance
• [ ] Chooses appropriate distributions
• [ ] Explains Random variables without prompts

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