Basic Concepts in Probability Distributions
QUESTION 1
A continuous uniform distribution U(100,200) will have the
same standard deviation as a continuous uniform distribution U(200,300).
True
False
QUESTION 2
There is a simple formula for normal areas, but we prefer a
table for greater accuracy.
True
False
QUESTION 3
The area under a normal curve is 1 only if the distribution
is standardized N(0,1).
True
False
QUESTION 4
The area under an exponential curve can exceed 1 because the
distribution is right-skewed.
True
False
QUESTION 5
The mean, median, and mode of a normal distribution will
always be the same.
True
False
QUESTION 6
A continuous uniform distribution U(0,800) will have ? = 400
and ? = 230.94.
True
False
QUESTION 7
Any normal distribution has a mean of 0 and a standard
deviation of 1.
True
False
QUESTION 8
For a continuous random variable, the total area beneath the
PDF will be greater than zero but less than one.
True
False
QUESTION 9
Normal distributions differ only in their means and
variances.
True
False
QUESTION 10
The height and width of a continuous uniform distribution’s
PDF are the same.
True
False
QUESTION 11
The exponential distribution is always skewed right.
True
False
QUESTION 12
If arrivals follow a Poisson distribution, waiting times
follow the exponential distribution.
True
False.
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