Random Variable Problems & Solutions

You keep track of the time you spend doing homework each evening. You spend 58 minutes, 36 minutes, 44 minutes, and 37 minutes. How do you find the mean of these times?

obrozenecy6 2022-01-18

What are the mean and standard deviation of a binomial probability distribution with n=5 and $p = \frac{1}{32}$ ?

William Cleghorn 2022-01-18

What are the mean and standard deviation of a binomial probability distribution with n=16 and $p = \frac{21}{32}$ ?

Irvin Dukes 2022-01-18

What are the mean and standard deviation of a binomial probability distribution with n=12 and $p = \frac{31}{32}$ ?

Painevg 2022-01-18

What are the mean and standard deviation of a binomial probability distribution with n=16 and $p = \frac{12}{47}$ ?

Danelle Albright 2022-01-18

What are the mean and standard deviation of a binomial probability distribution with n=8 and $p = \frac{12}{19}$ ?

Russell Gillen 2022-01-18

If a random sample of size 11 is drawn from a population distribution with standard deviation $σ = 10$ then what will be the variance of the sampling distribution of the sample mean?

burkinaval1b 2022-01-18

A population has a mean of $μ = 100$ and a standard deviation of $σ = 10$ . If a single score is randomly selected from this population, how much distance, on average, should you find between the score and the population mean?

Ikunupe6v 2022-01-18

For a population with a standard deviation of $σ = 10$ , a score of X = 44 corresponds to z = -0.50. What is the population mean?

James Dale 2022-01-18

Assume a binomial probability distribution with n=40 and p=0.55. What is the standard deviation?

obrozenecy6 2022-01-18

What are the mean and standard deviation of a binomial probability distribution with n=112 and $p = \frac{15}{37}$ ?

Osvaldo Apodaca 2022-01-18

The number of twos that appear after a die is rolled ten times is counted. Find the two-digit standard deviation if the experiment is repeated.

Lennie Davis 2022-01-18

What are the mean and standard deviation of a binomial probability distribution with n=25 and $p = \frac{10}{17}$ ?

b2sonicxh 2022-01-18

What are the mean and standard deviation of a binomial probability distribution with n=21 and $p = \frac{4}{17}$ ?

zagonek34 2022-01-18

What is the mean of 24, 36, 48 and 60?

Sapewa 2022-01-18

What are the mean and standard deviation of a binomial probability distribution with n=777 and $p = \frac{19}{21}$ ?

Mary Reyes 2022-01-17

What is an example of the law of large numbers?

fanyattehedzg 2022-01-17

What is a random walk?

hunterofdeath63 2022-01-17

Suppose X has probability density function f(x)=6x(1-x) for 0<x<1 and 0 otherwise. What is E[X] and Var[X]?

bmgf3m 2022-01-17

How do I summarize the possible outcomes of a random variable and their associated probabilities?

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