STATISTICS 125 - CHAPTER 6.1 Discrete Random Variables

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What are the two requirements for a discrete probability distribution?
The first rule states that the sum of the probabilities must equal 1. The second rule states that each probability must be between 0 and 1, inclusive. Let P(x) = 1 1. ∑ P(x) = 1 2. 0 ≤ P(x) ≤
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Determine whether the random variable is discrete or continuous. In each​ case, state the possible values of the random variable. ​(a) The number of points scored during a basketball game. ​(b) The time it takes to fly from City Upper A to City Upper B.
(a) The random variable is discrete. The possible values are x = 0, ​1, ​2,.... (b) The random variable is continuous. The possible values are t > 0.
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Determine whether the random variable is discrete or continuous. In each​ case, state the possible values of the random variable. ​(a) The number of people in a restaurant that has a capacity of 300. ​(b) The distance a baseball travels in the air after being hit.