Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Estimating the Mean and standard deviation of random variables.

Given independent random variables X and Y with means and standard deviations as shown, find out the mean and the standard deviation of each of these variables:

a)      Y-10

b)     5X

c)      0.5X+Y

d)     Y-X

e)      X+Y+3

 

MEAN

SD

X

20

6

Y

75

8

 

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M919705

Have any Question? 


Related Questions in Statistics and Probability

The average number of pages in a novel is 326 with a

The average number of pages in a novel is 326 with a standard deviation of 24 pages. If a sample of 50 novels is randomly chosen, what is the probability the average number of pages in these books is between 319 and 331?

Prove that if the result of the mens courtship algorithm

Prove that if the result of the men's courtship algorithm yields the same result as the women's courtship algorithm, then this resulting matching is the unique stable matching.

An iq test is designed so that the mean is 100 and the

An IQ test is designed so that the mean is 100 and the standard deviation is 16 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be ...

Relate the content of this video to the industry segment of

Relate the content of this video to the Industry segment of the external environment by describing which of Porter's Five Competitive Forces is the focus of Outsell Consulting's value proposition? What is the nature of t ...

1 what is an interaction2 how many interactions can be

1. What is an interaction? 2. How many interactions can be tested in a 2 x 2 design? In a 3 x 3 design? In a 2 x 2 x 3 design? 3. Why do researchers use expericorr designs?

1 why do researchers care how much variability exists in a

1. Why do researchers care how much variability exists in a set of data? 2. Distinguish between descriptive and inferential statistics. 3. Conceptually, what does the variance tell us about a set of data?

Let x have a poisson distribution with parameter lambda

Let X have a Poisson distribution with parameter lambda. Show that E(X)= lambda directly from the definition of expected value. [Hint: The first term in the sum equals 0, and then x can be canceled. Now factor out lambda ...

Case study diets and weight lossnbspa study innbspthe

CASE STUDY Diets and Weight Loss  A study in The Journal of the American Medical Association describes the effects of diets on weight control. In the study, 311 women were randomly divided into four groups. The first gro ...

A scarf company built a new parking garage in a business

A Scarf Company built a new parking garage in a business district. For a random sample of 100 days, daily fees collected averaged $1,800, with a standard deviation of $500. Construct a 90% confidence interval estimate of ...

The western way of war thesis posits that western societies

The Western Way of War thesis posits that western societies throughout history have generally fought wars in fundamentally similar ways. The precise elements of the Western Way of War are described succinctly in Geoffrey ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen