A numerical variable with a value determined by the outcome of a chance experiment.
What is a Random Variable
100
This type of random variable has possible values as isolated points along the number line.
What is Discrete?
200
A number on the z measurement scale that captures a specified tail area or central area.
What is a z critical value?
200
The mean of a random variable x is called this.
What is mu?
300
P(x) or "The probability distribution of a discrete random variable x" follows these two conditions on p(x).
What are 1) p(x) >=0, and 2) summation of p(x) = 1 for all possible x values?
300
The probability distribution of x, the number of defective tires on a randomly selected automobile checked at a certain inspection station, is given in the following table:
x 0 1 2 3 4
p(x) .54 .16 .06 .04 .20
The calculated mean value of x would be:
What is mu = 1.2?
400
A continuous probability distribution that has a bell shaped density curve.
What is Normal Distribution?
400
This is the mean value of a discrete random variable x; It locates the center of the variable's probability distribution:
What is mu = Summation of x times p(x)?
500
x 0 1 2 3 4 \n
p(x) .54 .16 .06 .04 .20 \n
Given the mean, mu = 1.2, the P(x>mu) is this.