YMS Chapter 7 Questions

YMS Chapter 7 Questions - YMS Chapter 7 Random Variables Q1...

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YMS Chapter 7 Random Variables Q1. A random variable is a variable whose value is a ________ of a random phenomenon. Q2. A random variable with a countable number of possible values is a _____ random variable. Q3. What is a probability distribution of a discrete random variable? Q4. For the probability distribution of a discrete random variable, every probability is between ___ and ___, and the sum of all the probabilities is equal to ___. Q5. In a probability histogram, what quantity do the horizontal and vertical axes represent, respectively? Q6. A continuous random variable can take on how many values for a certain interval in its domain? Q7. A continuous random variable’s probability distribution is described by a graph called the ___. Q8. Events, for continuous random variables, are described by the random variable’s taking on a value within a certain interval. The probability of that event is represented by what aspect of the density curve? Q9. Suppose you have a continuous random variable X. What is the probability that X=10? Q10. In a continuous probability distribution, what is the relationship between the probability that X<10 and the probability that X<=10? Q11. True or false: the normal distribution is an example of a continuous probability

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YMS Chapter 7 Questions - YMS Chapter 7 Random Variables Q1...

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