Random Variables and Their Probability Distributions
Quiz by jaime boy alegre
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- Q1
Classify if the random variables is discrete or continuous. The number of cars sold during a given month
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Classify if the random variables is discrete or continuous. The price of a shirt.
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Classify if the random variables is discrete or continuous. The number of customers who visit a hospital during any given hour.
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Classify if the random variables is discrete or continuous. The number of customers who visit a hospital during any given hour.
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Classify if the random variables is discrete or continuous. The number of accidents that recorded during a certain day.
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Each of the following tables lists certain values of X and their probabilities. Verify which table represents a valid probability.
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The table gives the probability distribution of a discrete random variable X. Find the probability that X assumes a value in the closed interval 0 to 4.
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The table gives the probability distribution of a discrete random variable X. Find the probability that X assumes a value in the interval 2 to 5.
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Suppose that two balanced dice are rolled. Let X be a random variable denotes the absolute value of the difference of the two numbers. What are the possible values of the random variable X ?
0, 1, 2, 3, 4, 5, 6
-5,-4,-3,-2,-1, 0, 1, 2, 3, 4, 5
1, 2, 3, 4, 5
0, 1, 2, 3, 4, 5
30s - Q10
The table gives the probability distribution of a discrete random variable X. Find the missing value?
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A random variable can assume five values: 0,1,2,3,4 . A portion of the probability distribution is shown below. Find P(X=3).
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A random variable can assume five values: 0,1,2,3,4 . A portion of the probability distribution is shown below. Calculate the mean of X. Express your answer in two decimal places.
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A random variable can assume five values: 0,1,2,3,4 . A portion of the probability distribution is shown below. Calculate variance of X. Express your answer in two decimal places.
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A random variable can assume five values: 0,1,2,3,4 . A portion of the probability distribution is shown below. Calculate standard Deviation of X. Express your answer in two decimal places.
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A normal random variable X has mean 10 and standard deviation 2, find the Z value o f X= 13.5. Express your answer in two decimal places.
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