User Account

All Pages

Sample means and sample variances of the two samples

Assignment Help Business Management
Reference no: EM132097662

Let X1, X2, X3, X4 be iid random variables each one with probability N(10, 4σ).

Let Y1, Y2, Y3 be iid random variables each one with probability N(5, 3σ).

The two samples are independent. Also, let ???X?¯???? , ???Y?¯????, S2X, S2Y be the corresponding sample means and sample variances of the two samples.

Answer the following questions:

a. What is the distribution of ???X?¯??-?Y?¯???? ?

b. What is the distribution of ??16σ?2????3S?X?2????+?9σ?2????2S?Y?2????? ?

For (a) I got that ???X?¯??-?Y?¯???? ~ N[5, ??σ√?7????? ].

Reference no: EM132097662

Questions Cloud

Decreases production level to meet the quarter demand : Suppose that you want to use a chase strategy that increases and decreases production level to meet the quarter demand.
Population proportion of american workers : Seeking to estimate the population proportion of American Workers with health insurance, researchers collect a sample of 1,012 people
Investigate the history of slavery : Evaluate the work of Artemisia Gentileschi Renaissance Artist and interpret why she is considered an early feminist.
Emphasis is placed on focusing on expected results : Explain why so much emphasis is placed on focusing on expected results in managing the professional employee.
Sample means and sample variances of the two samples : The two samples are independent. Also, let ???X?¯???? , ???Y?¯????, S2X, S2Y be the corresponding sample means and sample variances of the two samples.
Determine the standard time for this job : A worker-machine operation was found to involve 4.8 minutes of machine time per cycle in the course of 40 cycles of stopwatch study.
Prepare a research paper on professional accounting : choose a marketing area as research topic - Major is professional accounting - select a research topic but you can choose any re-searchable topic even outside
Significance level to test the claim : Based on responses from 1,013 randomly selected teenagers, conducted that 39% of teenagers cite grades as their greatest source of pressure.
Can an organization structure be changed quickly : Can an organization's structure be changed quickly? Why or why not? Should it be changed? Why or why not?

Reviews

Write a Review

Business Management Questions & Answers

  1 - choose one of these products-chocolate bars or bottles

1 - choose one of these products-chocolate bars or bottles of expensive perfume-and describe how marketers can apply

  Security category according to nist documentation

Many would argue that once information is classified into a security category according to NIST documentation, it should also be marked

  Case study about shimano

Why is Shimano also in the fishing tackle business?

  Examine the successes and failures of mergers

In a paper (750-1,000 words), examine the successes and failures of mergers by addressing the following:

  How far can a company go to protect interests

Zoey overhears Hector on the phone say, "OK, 30,000 ski parkas at $80 per parka. You've got yourself a deal. Thanks a lot."

  Identify a global organization with a multinational presence

Identify a global organization with a multinational presence.

  How can b2c e commerce businesses use the internet

How can B2C e-commerce businesses use the Internet to further enhance their CRM initiatives?- How can B2B e-commerce businesses use the Internet to further enhance their CRM initiatives?

  Relationship between union and employer

In your opinion, must the relationship between union and employer during the initial phases of union emergence be adversarial? Are there ever situations in which the employer would or should welcome the presence of a union? When and why?

  Budget process at organization

Have you ever been involved in the budget process at your organization? Describe your role and responsibilities. If you've never been involved in the budget process at your organization, discuss why (or why not) you would want to be responsible fo..

  Major closure deliverables relevant

Determine three (3) major closure deliverables relevant to your selected project. Explain each deliverable in detail.

  Effectively managing budgetsin order to organize and plan a

effectively managing budgetsin order to organize and plan a project effectively project managers use a work breakdown

  Types of buyer-supply relationships there are three types

types of buyer-supply relationships .there are three types of buyer-supply relationships transactional collaborative

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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