IEE 380 EXAM 1 PRACTICE QUESTIONS AND ALL
ANSWERS CORRECT
You must utilize a TI-89. ANSWER False
F(x) = P(X <= x) graph when X represents the fair die's face value? - REPLY x
on the x-axis
F(x) on the y-axis
open step function for a graph
ANSWER P(Z <= 1.23) / phi(1.23) is the entry in the Z table (CDF of a
standard normal random variable) that corresponds to a row label of 1.2 and a
column label of.03.
Random variable X is continuous if it contains a/an _______________ number
of values within a finite interval of its range. The answer is limitless.
The chance that a random variable, X, is _______________ to a given number,
x, is known as the CDF. A response that is less than or equal to
ANSWER false, f(x) on a graph of the standard normal variable, where f(z) is
on the y-axis
******For a random variable, let x (lowercase) represent a particular measured
numerical value. How is this random variable represented? In other words, what
is the random variable's notation? - ANSWER P(X=x)
Go to section 3.6 of the text and examine Example 3-16 Digital Channel. Your
weekly reading assignment included this example.
In this case, which of the following definitions of the random variable is
accurate? The random variable, ANSWER X, is the quantity of incorrectly
received bits out of the subsequent four broadcast bits.
******Assume that for 3 < x < 8, the pdf of X equals f(x) =.25.
ANSWERS CORRECT
You must utilize a TI-89. ANSWER False
F(x) = P(X <= x) graph when X represents the fair die's face value? - REPLY x
on the x-axis
F(x) on the y-axis
open step function for a graph
ANSWER P(Z <= 1.23) / phi(1.23) is the entry in the Z table (CDF of a
standard normal random variable) that corresponds to a row label of 1.2 and a
column label of.03.
Random variable X is continuous if it contains a/an _______________ number
of values within a finite interval of its range. The answer is limitless.
The chance that a random variable, X, is _______________ to a given number,
x, is known as the CDF. A response that is less than or equal to
ANSWER false, f(x) on a graph of the standard normal variable, where f(z) is
on the y-axis
******For a random variable, let x (lowercase) represent a particular measured
numerical value. How is this random variable represented? In other words, what
is the random variable's notation? - ANSWER P(X=x)
Go to section 3.6 of the text and examine Example 3-16 Digital Channel. Your
weekly reading assignment included this example.
In this case, which of the following definitions of the random variable is
accurate? The random variable, ANSWER X, is the quantity of incorrectly
received bits out of the subsequent four broadcast bits.
******Assume that for 3 < x < 8, the pdf of X equals f(x) =.25.
