Exam 3 ISYE 3770 Questions and Answers 100% Guaranteed Pass

Exam 3 ISYE 3770 Questions and

Answers 100% Guaranteed Pass


T/F: Discrete random variables take on values across a

continuum. - ✔✔FALSE

T/F: The sum of all of the probabilities in a probability mass

function equals unity. - ✔✔TRUE

T/F: A probability mass function, f(x), is a non-decreasing function

of x. - ✔✔FALSE

T/F: The cumulative distribution function, F(x), of a discrete

random variable is the sum of all of the probabilities that are less

than or equal to x, where x is a specific value of the discrete

random variable, X. - ✔✔TRUE

T/F: A cumulative distribution function can be used to find the

probability mass function of a discrete random variable. -

✔✔TRUE

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, T/F: If a random variable, X, has only integer values, then the

mean, E(X), will always be an integer. - ✔✔FALSE

Discrete Uniform Distribution - ✔✔A random variable X has a

discrete uniform distribution if each of the n values in its range,

x1, x2,..., xn, has equal probability.

How many numerical values can a Binomial random variable, X,

have? - ✔✔n+1

T/F: A Bernoulli trial is a random experiment with only two

outcomes, success and failure. - ✔✔TRUE

The binomial distribution arises from a series of Bernoulli trials. -

✔✔TRUE

Bernoulli - ✔✔2 possible outcomes - fail or success

Binomial - ✔✔n independent bernoulli trials

geometric - ✔✔until 1st success

poisson - ✔✔rare events




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