Consider the discrete random variable X given in the table below. Calculate the mean, variance, andstandard deviation of X.131520P(X)0.080.10.580.120.12u =o? =What is the expected value of X?

Answered: Image /qna-images/answer/1ac67d71-92b9-4433-b7db-45b1eebd85c0.jpg

Answered: Consider the discrete random variable X…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

X is a discrete random variable with the following PMF: P(X = -9.2) = 0.25 P(X = -2.5) = 0.25 P(X = 7.7) = 0.5 Find the standard deviation of X.
The random variable xx represents the number of emails received at a help desk in one hour, and it has a Poisson distribution with a mean of 7.9. (Round to two decimal places.)What is the variance?σ2 = What is the standard deviation?σ =
Find the standard deviation of the random variable X with the given probability distribution. * 1 P(x) 0.34 0.25 0.20 2.
Suppose x is a normally distributed random variable with mean u =0 and standard deviation o = 1. Find the probability that x < 0.64. O 73.89% 76.11% 23.89% O 26.11%
Find the variance and standard deviation of the following random variable. Hint: start by writing the distribution for the random variable X2 . x P(X = x) 0 0.5 1 0.2 2 0.3
The probability distribution of a random variable Y is given below. Y = y 2 4 6 8 P (Y = y) 0.1 0.3 0.4 0.2 1. Find the probability that Y is within one standard deviation of its expected 2. Explain why Y does not have a discrete uniform distribution. A population is normally distributed with µ = 138 and sigma = 21. Given a simple random sample of size n = 25, determine the probability that the sample mean, X¯ , will be less than 128.
Use the z formula and the normal table( z distribution) to solve the following problems. the time it takes a person to lose weight following a healthy diet with regular exercise may be looked upon as a random variable having a normal distribution with mean μ = 18.4 lbs per month and standard deviation σ = 5.8 lbs per month. Find the probabilities that during a period of healthy dieting and exercising a person's weight will be reduced by at least 20 lbs per month,between 5 and 15 lbs per month,at most 30 lbs per month and between 15 and 25 lbs per month?
Find the mean, variance, and standard deviation of the binomial distribution with the given values of n and p. n= 122, p = 0.77 The mean, µ, is (Round to the nearest tenth as needed.) The variance, o2, is (Round to the nearest tenth as needed.) The standard deviation, o, is (Round to the nearest tenth as needed.)
1.Find the expected value E(X) 2.find the variance 3.find standard deviation 4.find the value of P(X<8) round all answers to one decimal
The probability distribution of a random variable X is given below.
The answer choices for expected value of x is E(X): 0.561 0.531 0.550 0.697 The answer choices for the standard deviation of the random variable X, denoted σ,: 0.80.60.70.9 and which player is more likely to help the team score runs
Expected value of a random variable X is 0.20. X2.P(X) = 0.35. Standard deviation of the random variable X is: O a. 0.5723 O b. 0.6538 O c. 0.3100 O d. 0.5568

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS

Consider the discrete random variable X given in the table below. Calculate the mean, variance, and standard deviation of X. X 13 15 20 P(X) 0.08 0.1 0.58 0.12 0.12 %3D O = What is the expected value of X?