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What's on the worksheet
- Each part gives three probabilities for two events A and B on the same trial.
- A concert hall has 12 rows of seats, with 20 seats in each row numbered 1 to 20.
- \text{coffee} \text{pastry} 0.34 0.21 0.17 \text{neither:
- At a Saturday farmers' market, 44% of shoppers buy fruit, 48% buy bread, and 72% buy exactly one of the two.
- A local radio station knows that 60% of its listeners tune in to the morning show and 55% tune in to the evening show.
- An ice rink sold 140 tickets on Saturday, each for the afternoon session or the evening session.
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The free lesson teaches it with worked examples and practice problems.
The general addition rule: 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