Gve the probability distribution of y x2 and compute ey

Assignment Help Basic Statistics
Reference no: EM13580411

The probability distribution of a discrete random variable X is given by:

P(X = -1) = 1/5 ,
P(X = 0) = 2/5 ,
P(X = 1) = 2/5 .

a. Compute E[X].

b. Give the probability distribution of Y = X^2 and compute E[Y ] using the distribution of Y .

c. Determine E[X^2].

Reference no: EM13580411

Questions Cloud

Can he actually do what he claims is a probability : a professional gambler claims that he has loaded a die so that the outcome of 123456 have corresponding probabilities
Construct a 99 confidence interval for the difference in : question 1a food research laboratory conducts a series of taste tests to compare two sauce recipes a and b. customers
I the supermarket begins each morning with a stock of 61 : a store has determined that daily demand for eggs has a bell-shaped distribution with a mean of 55 cartons and a
What is the required rate of return on this stock please : the common stock of bethel baked goods is valued at 8.76 a share. the company increases its dividend by 1.5 percent
Gve the probability distribution of y x2 and compute ey : the probability distribution of a discrete random variable x is given bypx -1 15 px 0 25 px 1 25 .a. compute
Your organization has a goal of 14 days for the average : your organization has a goal of 14 days for the average processing of a purchase request pr from notification to final
Certain mushrooms launch their spores by a catapult : certain mushrooms launch their spores by a catapult mechanism. as water condenses from the air onto a spore that is
Point a is at position 4j -3kcm point b is at position -3cm : point a is at position 4j -3kcm. point b is at position -3cm k. point c is at position 3i -2j 5k cm. point d is at
A lab technician adds 250 ml of a 000450 m stock solution : a lab technician adds 2.50 ml of a 0.00450 m stock solution of barium chloride to a test tube then adds other solutions

Reviews

Write a Review

Basic Statistics Questions & Answers

  Traditional methods for testing hypotheses

What is the minimum sample size required to assure that your sample proportion "p" will be within the required margin of error around the population proportion "p". Use the traditional methods for testing hypotheses and show the results of all ste..

  State null and alternative hypotheses-mean attitude score

State the null and alternative hypotheses needed to attempt to establish that the advertisement increases the mean attitude score

  Compute the z values for both students

The mean salary for engineers with less than 5 years' experience is $60,000 with a standard deviation of $5,000. Compute the z values for both Rob and Rachel.

  Anova and confidence intervals

Determine which groups differ in average shelf life. Give test statistic, hypothesis, decision rule and hypothesis

  State null and alternative hypothesis and critical value

Convinving evidence at the .05 significance level to support the claim that the actual number of cards is an undergrads wallet is greater than 4.09. state the null and alternative hypothesis.

  Is sample large enough to give the margin of error

Do you think a sample of 25 is large enough to give them the margin of error they want? If not, how large a sample do you suggest they take?

  Number of cases abnormal on national cancer incidence rates

Tweleve cases of leukemia are reported in people living in a particular census tract over a 5 year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cancer incidence rates?

  Effect of question content and wording for response strategy

How do question content and wording, response strategy, and preliminary analysis planning affect question construction?

  Determining the p-value for the test

Test the claim at alpha-.05 that the average wage has not changed by finding the p-value for the test.

  Preceding period-matrix of transition probabilities

find the product of the vector of state probabilities for the preceding period and the matrix of transition probabilities.

  Find probability that patient is diagnosed as hypokalemic

Judy's measured potassium level varies according to the Normal distribution with mean = 3.8. If a single potassium measurement is made, what is the probability that Judy is diagnosed as hypokalemic?

  Compute confidence level for difference in means

Compute a 95% confidence level for the difference in the means of the two treatment methods and select the best answer below. Assume that the independent random samples were taken from normal distribution.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd