ZuoTi.Pro
Search
Solutions
Q&A
Blog
Scan Question
+ Post
Ask a Question
Post a Question (with Answer)
Post a Blog
Get Coins
Log In
Sign Up
Home
/
Topics
/
Random-Variable
Random-Variable Questions
Let ๐ be a standard normal random variable.
Calculate Var(๐) if ๐ represents the outcome when a fair die is rolled.
Assume that a continuous random variable ๐ that is normally distributed with a mean of 100 and a standard deviation of 16. Find the probability that ๐ being a. greater than 50, b. less than 30
A random variable X is lognormal if ln X, the natural logarithm of X, is normally distributed. Find the mean and variance of a lognormal random variable with ln X โผ N(ยต, ฯ2 ). [Hint: consider using the mgf of the normal distribution.]
The Bernoulli random variable takes values 0 and 1, and has probability function f(x) = (p^x) [(1 โ p)^(1โx)]
Let X be a discrete random variable with probability function f(x). Prove that E[a + b g(X) + c h(X)] = a + bE[g(X)] + cE[h(X))], where g and h are functions, and a, b and c are constants.
Let a random variable X have the p.f. f(x) = c(|x| + 1)2 for x = 0, ยฑ1. Find the constant c so that f(x) is a valid probability function. Then, find E(X), E(X2 ) and var(X).
+More
Random-Variable Articles
+More
ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
Share Your Knowledge
Post an Article
+5 Coins
Post an Answer
+5 Coins
Post a Question with Answer
+5 Coins
ADVERTISEMENT
Active Questions
Water at gauge pressure of 3.8 atmospheres at street level enters an office building at 0.60...
asked 10 minutes ago
Quick question, I want to know how to convert decimal numbers to binary number, when i...
asked 31 minutes ago
You found out that now you are going to receive payments of $8,500 for the next...
asked 34 minutes ago
17. Technician A says that leaking components are usually repaired rather than replaced. Technician B says...
asked 35 minutes ago
A) An Operon is:? 1- A gene that affect another gene transcription. 2. A gene coding...
asked 42 minutes ago
When opening a file, use this method to determine whether a file exists before you attempt...
asked 46 minutes ago
Sales total $300,000 when variable costs total $180,000 and fixed costs are $60,000. Breakeven sales total:...
asked 53 minutes ago
1) To calculate the depth of a water well, an explorer drops a stone and with...
asked 50 minutes ago
0.429-g sample of gas occupies 125 mL at 60. cm of Hg and 25ยฐC. The molar...
asked 52 minutes ago
The pH of a 0.90M solution of boric acid (H3BO3) is measured to be 4.64. Calculate...
asked 1 hour ago
on april 10, a company acquired land valued at $58,000 in exchange for 1,000 shares of...
asked 1 hour ago
Is ampicillin or solvents (such as acetone) more effective at killing off bacteria, in general? Explain...
asked 1 hour ago
ADVERTISEMENT