IEE 380 Exam 1 practice test
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ LATEST 100%
GUARANTEED PASS
******Suppose the pdf of X is given as f(x) = .25 for 3 < x < 8
How many numerical values can X be? - CORRECT ANSWER-5
******How many values can a Poisson random variable have? - CORRECT ANSWER-n
Let P(X=x) be the probability that a random variable equals a specific measured numerical value,
x.
Let p(x) denote the probability mass function of that random variable, X.
Is this relationship True or False: P(X=x) = p(x) - CORRECT ANSWER-true
If Y is the face value for the throw of a fair die, then the equation ((b-a+1)^2 - 1)/12 is the
______________ of Y. - CORRECT ANSWER-variance
, A normally distributed random variable that has a mean equal to 0 and a standard deviation
equal to 1 is called _____________ - CORRECT ANSWER-A standard Normal Random Variable,
AKA Z
X is the face value for the throw of a fair die. What is the expected value of X? - CORRECT
ANSWER-3.5
X is a continuous random variable of "int( f(x)dx ) from low x to general x" is - CORRECT
ANSWER-the CDF of x
*****Suppose X has the pdf 3e^(-3x) for x > 0. (This is called the Exponential pdf.)
What is the probability that X is equal to 4.2? - CORRECT ANSWER-.9999
determined (n nCr n-1) - CORRECT ANSWER-n
determined (n nCr 0) - CORRECT ANSWER-1
determined (n nCr 1) - CORRECT ANSWER-n
determined (n nCr n) - CORRECT ANSWER-1
In the equation shown for the computation of the variance of X, V(X), what is another
representation of this portion of the right side of that equation:
1^2(1/6)+2^2(1/6)+3^2(1/6)+4^2(1/6) - CORRECT ANSWER-E(x^2)
An experiment that is repeated in the same manner every time but that can result in different
____________ is called a random experiment. - CORRECT ANSWER-outcomes
QUESTIONS AND VERIFIED
CORRECT ANSWERS
GRADED A+ LATEST 100%
GUARANTEED PASS
******Suppose the pdf of X is given as f(x) = .25 for 3 < x < 8
How many numerical values can X be? - CORRECT ANSWER-5
******How many values can a Poisson random variable have? - CORRECT ANSWER-n
Let P(X=x) be the probability that a random variable equals a specific measured numerical value,
x.
Let p(x) denote the probability mass function of that random variable, X.
Is this relationship True or False: P(X=x) = p(x) - CORRECT ANSWER-true
If Y is the face value for the throw of a fair die, then the equation ((b-a+1)^2 - 1)/12 is the
______________ of Y. - CORRECT ANSWER-variance
, A normally distributed random variable that has a mean equal to 0 and a standard deviation
equal to 1 is called _____________ - CORRECT ANSWER-A standard Normal Random Variable,
AKA Z
X is the face value for the throw of a fair die. What is the expected value of X? - CORRECT
ANSWER-3.5
X is a continuous random variable of "int( f(x)dx ) from low x to general x" is - CORRECT
ANSWER-the CDF of x
*****Suppose X has the pdf 3e^(-3x) for x > 0. (This is called the Exponential pdf.)
What is the probability that X is equal to 4.2? - CORRECT ANSWER-.9999
determined (n nCr n-1) - CORRECT ANSWER-n
determined (n nCr 0) - CORRECT ANSWER-1
determined (n nCr 1) - CORRECT ANSWER-n
determined (n nCr n) - CORRECT ANSWER-1
In the equation shown for the computation of the variance of X, V(X), what is another
representation of this portion of the right side of that equation:
1^2(1/6)+2^2(1/6)+3^2(1/6)+4^2(1/6) - CORRECT ANSWER-E(x^2)
An experiment that is repeated in the same manner every time but that can result in different
____________ is called a random experiment. - CORRECT ANSWER-outcomes
