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What's on the worksheet
- Each part gives probabilities for two events A and B on the same trial.
- At a movie theater, 34% of moviegoers buy popcorn, 66% buy a drink, and 10% buy both (made-up figures).
- A climbing gym logged 280 attempts on its routes last week, sorted by the grade of the route and by whether the climber reached the top (made-up…
- S\text{:
- A game uses five cards numbered 1 to 5.
- A town library ran a summer reading challenge (made-up figures).
Teach it first
The free lesson teaches it with worked examples and practice problems.
Finding a conditional probability: the lesson ›More Chapter 4 worksheets: Probability and random variables
- 4.1The general addition rule
- 4.2Finding a conditional probability
- 4.3The general multiplication rule
- 4.4Running a simulation and estimating a probability
- 4.5Density curves: area, mean and median
- 4.6The standard normal distribution
- 4.7Normal calculations: areas and percentiles
- 4.8Random variables and probability distributions
- 4.9Cumulative probability
- 4.10Expected value
- 4.11Variance and standard deviation of a random variable
- 4.12Linear transformations of a random variable
- 4.13Combining random variables