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- At a zip-line park, the first rider of the day is scheduled to launch at 9:00 a.m., and the line never opens early.
- Let X be the number of passengers in a randomly chosen rideshare trip in one city.
- Let X be the number of postcards bought by a randomly chosen customer at a museum gift shop.
- 2 3 4 ?
- A random variable X has P(X = x) = kx for x = 1, 2, 3, 6.
- Lucas chooses one word at random, every word equally likely, from the sentence "Seven owls sat high in the old pine tree." Let L be the number of…
- Three people get into an elevator on the ground floor of a building with three upper floors, numbered 1, 2 and 3.
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Random variables and probability distributions: 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