Random Variable Problems & Solutions

What are the mean and standard deviation of a binomial probability distribution with n=18 and $p = \frac{2}{32}$ ?

idiopatia0f 2022-01-16

Consider a Poisson distribution with $μ = 3$ . What is $P (x \geq 2)$ ?

Gwendolyn Willett 2022-01-16

What is the formula for the standard error?

osula9a 2022-01-16

What is Chebyshev's inequality?

Lennie Davis 2022-01-16

Poisson process can be used to represent the occurrence of structural loads over time. Suppose the mean time between occurrences of loads is 0.42 year. What is the probability that more than five loads occur during a 3 year period?

Karen Simpson 2022-01-16

What is the probability that the deal of a five-card hand provides a pair of aces?

veksetz 2022-01-16

How do I find the probability density function of a random variable X?

stop2dance3l 2022-01-16

Why is a Poisson distribution important?

percibaa8 2022-01-16

Suppose X has a Poisson distribution with a mean of .4. How would i find the probability when X=0, X=4, $X \leq 2$ , and when X=8?

Victor Wall 2022-01-16

How do you know when to use a Poisson distribution or binomial distribution?

Bobbie Comstock 2022-01-16

How are random variables generally identified (i.e., what notation is used to identify a random variable)?

stop2dance3l 2022-01-16

Last year a man wrote 142 checks. Let random variable x represent the number of checks he wrote in a day, and assume it has a Poisson distribution. What is the mean number of checks written per day?

kuhse4461a 2022-01-16

If a random variable follows a random walk, is the expected change in its value correlated with its prior changes?

b2sonicxh 2022-01-16

What is a Markov Chain?

garnentas3m 2022-01-16

What is the moment generating function of a Poisson distribution?

hionormf 2022-01-16

How do you derive a cumulative density function from a probability density function?

David Lewis 2022-01-16

Would the nutrition levels and dietary habits (e.g. high fat diets, high cholesterol levels, protein or low carb diets, vegetarian, vegan, normal eater, etc.) of people in a survey be considered either Discrete or Continuous data?

Salvatore Boone 2022-01-16

Is age continuous or discrete data?

sputneyoh 2022-01-16

You have studied the number of people waiting in line at your bank on Friday afternoon at 3 pm for many years, and have created a probability distribution for 0, 1, 2, 3, or 4 people in line. The probabilities are 0.1, 0.3, 0.4, 0.1, and 0.1, respectively. What is the probability that at most 3 people are in line at 3 pm on Friday afternoon?

David Troyer 2022-01-16

What does the term expected value mean?

When you have an equation that deals with random variables, always start with an explanation related to some random variable examples. It is what the majority of skilled engineers do because it is the only way how one can avoid mistakes when working with statistical data. Even though this part of statistics and probability may seem overly complex, approach every random variable equation through the lens of probability as you seek answers to your questions. Compare provided solutions, see similarities, and you will achieve the most efficient solutions.

Explore Random Variables: Examples & Equations