Find the density function of Y2x+8 9. Let R have probability mass function (pmf) pr)-1/8 for...
6)Var(R). 10. Suppose the density function of a random variable X is f(x) σ' x > 0, where σ > 0 is constant. Find E(X) and D(X).
1. (Lec 6 & 7 discrete R.V., 16 pts) The pmf (probability mass function) of a random variable X is shown below: -2 0.2 Let A be the event that X is less than 0. .ן 0.4 otherwise px(x) 0.1 0.1 (a) Find the value of the constant a nd ElI and omai pmf of X given A (c) Find the conditional pmf of X given A. (d) Find E(X[A] and Var[X[A]. (e) Let Y2X 3. Find the pmf of...
6)Var(R). 10. Suppose the density function of a random variable X is f(x) σ' x > 0, where σ > 0 is constant. Find E(X) and D(X).
1. 20 points Let X be a random variable with the following probability density function: f(x)--e+1" with ? > 0, ? > 0, constants x > ?, (a) 5 points Find the value of constant c that makes f(x) a valid probability mass function. (b) 5 points Find the cumulative distribution function (CDF) of X.
Please answer the question clearly
1. Find the probability distribution (PMF) of Y, denoted by f(y), where Y is the absolute differ- ence between the number of heads and the number of tails obtained in four tosses of a balanced coin 2. Determine whether the function f(x) is a valid probability distribution (PMF) for a random variable with the range r - 0,1,2,3, 4. r2 f()30 3. Suppose X is a random variable with probability distribution (PMF) given by f(x)...
Please solve part e! Priority!
1. (10 points) Let a random variable Y have probability density f(), 0 :otherwise (a) (2 points) Find the normalization constant c (b) (2 points) Write the expression for the cumulative distribution function (CDF) (c) (2 points) Find ElY] (d) (2 points) Find Var(Y)
Suppose density function positively valued continuous random variable X has the probability a fx(x)kexp 20 fixed 0> 0 for 0 o0, some k > 0 and for (a) Find k such that f(x) satisfies the conditions for a probability density function (4 marks) (b) Derive expressions for E[X] and Var[X (c) Express the cumulative distribution function Fx(r) in terms of P(), the stan dard Normal cumulative distribution function (8 marks) (8 marks) (al) Derive the probability density function of Y...
S 4, with the density function 1. (10 points) Let X be a continuous random variable on 3 S f(x) = 2x - 3). a/ CNculate Pr(3.2 S X) and Pr(3 < X) b/ Find E(X) and Var(x) 2. (10 points) For any number A, verify that fæ) -e-, 12 A is a density function. Compute the assocuated cumulative distribution for X
2. Suppose X is a continuous random variable with the probability density function (i.e., pdf) given by f(x) - 3x2; 0< x < 1, - 0; otherwise Find the cumulative distribution function (i.e., cdf) of Y = X3 first and then use it to find the pdf of Y, E(Y) and V(Y)
Question 2 Let X be a continuous random variable that has a Cumu lative Distribution Function given by: Pr[X 20 if €(0,20). The CDF is zero for < 0 and one for x> 20. Find: a) Pr[X 10 b) Pr[X 5 e) E[X] d) The probability density function of r, f(x) 1 e) Plot (separately) a graph of the CDF of x and a graph of the pdf of as a function of r