Let X be a random variable with the following probability distribution.Value x of X P(X=x)10203040500.100.300.200.250.15Complete the following. (If necessary, consult a list of formulas.)(a) Find the expectation E (X) of X.E (X) = 0(b) Find the variance Var(X) of X.Var(x) =

x p(x) x*p(x) x2*p(x) 10 0.10 1 10 20 0.30 6 120 30 0.20 6 180 40 0.25 10 400 50 0.15 7.5…

Answered: Let X be a random variable with the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Activity 2: Find Mu and Friends Directions: Find the mean, variance and standard deviation of each of the following probability distributions. 1. P(x) 0.45 0.35 0.20 2. 2. 0.20 3 4. P(x) 0.15 0.15 0.30 0.20 2022.02.18 11:27
Pls solve for 4, 5 and 6.
The table shows the probability distribution of the number of days (x) to complete a construction project by a contractor. x f(x) 1 0.104 2 3 0.312 4 0.240 5 0.098 6 0.017 8 The variance of the days to complete the project is ________. a 1.665 b 1.542 c 1.428 d 1.322
A random variable X has the probability function as given in the table below. It is easy to verify that the expected value is 12. Find the variance of X X P(X) 6 .25 12 .50 18 .25
x P(x) 0 0.12 1 0.08 2 0.08 3 0.08 4 0.14 5 0.1 6 0.14 7 0.26 Find the variance of this probability distribution.Give your answer to at least 2 decimal places
X P(X) 0 0.2 1 0.2 2 0.11 3 0.43 Complete the distribution table and find Variance of X. 4 ?
variable with the following probability distribution. Value x of X P=Xx -20 0.10 -10 0.15 0 0.45 10 0.25 20 0.05 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation EX of X . ? =EX (b) Find the variance Var X of X .? =VarX
Find the mean of the following probability distribution? P(x) 0.1605 1 0.2848 2 0.0206 3 0.2536 4 0.2805 Use the round-off rule for measures of center and variation, mean = which is one place more than the x-values.
I am in Prob/Stat! Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places. x P(x) 0 0.15 1 0.15 2 0.2 3 0.5 I have multiplied P by x, thus, P(x) as such: 0.15(0) = 0 0.15(1) = 0.15 0.2(2) = 0.4 0.5(3) = 1.5 I then add the four together to get the sum of; 2.05. What am I doing wrong? Am I not finding the standard deviation correctly?? Thank you in advance!
The table shows the probability distribution of the number of days (x) to complete a construction project by a contractor. x f(x) 1 0.104 2 3 0.312 4 0.240 5 0.098 6 0.017 13 If you doubled each number of days to completion in the Days (x) column, the variance of days to completion will be _________. a 5.710 b 4.758 c 3.965 d 2.855
The function f (x) = xc², x = 1, -1, 2, -2, 3, -3In order for the random variable X to be a probability functionWhat should be the constant c. Find the distribution function, expected value, and variance of the random variable X.
statistic

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x	p(x)	x*p(x)	$x^{2} * p (x)$
10	0.10	1	10
20	0.30	6	120
30	0.20	6	180
40	0.25	10	400
50	0.15	7.5	375
		$Σx * p (x) = 30.5$	${Σx}^{2} * p (x) = 1085$

Let X be a random variable with the following probability distribution. Value x of X P(X=x) 10 20 30. 40 50 0.10 0.30 0.20 0.25 0.15 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E(X)= (b) Find the variance Var(X) of X. Var(x) =