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Random Variables and Their Probability Distributions
Quiz by jaime boy alegre
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Classify if the random variables is discrete or continuous. The number of cars sold during a given month
Classify if the random variables is discrete or continuous. The price of a shirt.
Classify if the random variables is discrete or continuous. The number of customers who visit a hospital during any given hour.
Classify if the random variables is discrete or continuous. The number of customers who visit a hospital during any given hour.
Classify if the random variables is discrete or continuous. The number of accidents that recorded during a certain day.
Each of the following tables lists certain values of X and their probabilities. Verify which table represents a valid probability.
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.
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.
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 ?
The table gives the probability distribution of a discrete random variable X. Find the missing value?
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).
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.
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.
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.
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.
Calculate the area under the standard normal curve between z = -1.4 and z = 1.4. Express your answer in four decimal places.
For the standard normal curve, the area that lies to the left of 1.13 is?
What is the z-score for which the area under the standard normal curve to its left is 0.96.Â
Use the table of areas for standard normal distribution to obtain the shaded area under the standard normal curve.
For the standard normal curve, the area that lies between -1.10 and -0.36 is?