Question

There is a random variable X. It has the probability distribution of f(x) = 0.55 -...

There is a random variable X. It has the probability distribution of f(x) = 0.55 - 0.75X, for 2 < x < 6. What is E(X)?

Continuing with the random variable X from question 1 (It has the probability distribution of f(x) = 0.55 - .075X, for   2 < x < 6): What is V(X)?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1. There is a random variable X. It has the probability distribution of f(x) = 0.55...
1. There is a random variable X. It has the probability distribution of f(x) = 0.55 - .075X, for 2 < x < 6. What is E(X)? 2. Continuing with the random variable X from question 1 (It has the probability distribution of f(x) = 0.55 - .075X, for   2 < x < 6): What is V(X)? 3. Let R and S be two independent and identically distributed random variables. E(R) = E(S) = 4. V(R) = V(S) = 3....
A random variable x has the following probability distribution. Determine the standard deviation of x. x...
A random variable x has the following probability distribution. Determine the standard deviation of x. x f(x) 0 0.05 1 0.1 2 0.3 3 0.2 4 0.35 A random variable x has the following probability distribution. Determine the expected value of x. x f(x) 0 0.11 1 0.04 2 0.3 3 0.2 4 0.35 QUESTION 2 A random variable x has the following probability distribution. Determine the variance of x. x f(x) 0 0.02 1 0.13 2 0.3 3 0.2...
A random variable X has a probability function f(x) = Ax, 0 ≤ x ≤ 1,...
A random variable X has a probability function f(x) = Ax, 0 ≤ x ≤ 1, 0, otherwise. a. What is the value of A? (Hint: intigral -inf to inf f(x)dx= 1.) b. Compute P(0less than x less than 1/3) c. Compute the cdf. of X. d. Compute E(X). e. Compute V(X).
Let X be a random variable with the following probability distribution: Value x of X P(X=x)  ...
Let X be a random variable with the following probability distribution: Value x of X P(X=x)   4   0.05 5   0.30 6   0.55 7   0.10 Find the expectation E (X) and variance Var (X) of X. (If necessary, consult a list of formulas.) E (x) = ? Var (X) = ?
A random variable X has probability density function f(x) defined by f(x) = cx−6 if x...
A random variable X has probability density function f(x) defined by f(x) = cx−6 if x > 1, and f(x) = 0, otherwise. a. Find the constant c. b. Calculate E(X) and Var(X). c. Now assume Z1, Z2, Z3, Z4 are independent RVs whose distribution is identical to that of X. Compute E[(Z1 +Z2 +Z3 +Z4)/4] and Var[(Z1 +Z2 +Z3 +Z4)/4]. d. Let Y = 1/X, using the formula to find the pdf of Y.
The random variable X has probability density function: f(x) = ke^(−x) 0 ≤ x ≤ ln...
The random variable X has probability density function: f(x) = ke^(−x) 0 ≤ x ≤ ln 2 0 otherwise Part a: Determine the value of k. Part b: Find F(x), the cumulative distribution function of X. Part c: Find E[X]. Part d: Find the variance and standard deviation of X. All work must be shown for this question. R-Studio should not be used.
The random variable X has a probability density function f(x) = e^(−x) for x > 0....
The random variable X has a probability density function f(x) = e^(−x) for x > 0. If a > 0 and A is the event that X > a, find f XIA (xlx > a), i.e. the density of the conditional distribution of X given that X > a.
Let X be a random variable with the following probability distribution: Value x of X P=Xx...
Let X be a random variable with the following probability distribution: Value x of X P=Xx 1 0.15 2 0.55 3 0.05 4 0.15 5 0.10 Find the expectation EX and variance Var X of X .
X is a continuous random variable with the cumulative distribution function F(x)   = 0               when...
X is a continuous random variable with the cumulative distribution function F(x)   = 0               when x < 0 = x2              when 0 ≤ x ≤ 1 = 1               when x > 1 Compute P(1/4 < X ≤ 1/2) What is f(x), the probability density function of X? Compute E[X]
Let the probability density function of the random variable X be f(x) = { e ^2x...
Let the probability density function of the random variable X be f(x) = { e ^2x if x ≤ 0 ;1 /x ^2 if x ≥ 2 ; 0 otherwise} Find the cumulative distribution function (cdf) of X.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT