Two sample tests- hypothesis testing, Operation Research

Assignment Help:

Two Sample Tests

In some  situation the researchers may be taking  statistical decisions based on two samples. Each  of the  two  samples may  represent a particular under consideration. For  example one  may be interested to study the effectiveness of teaching methods like  unstructured teaching and  structured teaching. Suppose college have changed their method of teaching from  unstructured  teaching to structured teaching recently. Then the researcher has to take a random sample of students of a particular programme from  different colleges and collect their performances before introducing the structured methods of teaching  and after introducing the structured method of teaching. The respective observation will  form  two  samples .

There are many  more examples which  are as listed below:

a.Number of defects found in the daily  lots  of items produced by a set of similar machines  before  and after  installing a costly  automatic inspection systems in them.

b. Monthly  sales revenues of a product in different regions before launching  an advertisement  campaign and after launching the advertisement campaign.

c.Number of daily transaction in a bank  before and after introducing computers.

d. Number of outpatients treated in a government hospital before and after providing modern infrastructure.

There  are various non parametric tests  but we will  discuss only a few  of the  better  known and more widely used ones.

a.The sign test

1. One samples  test

2.Two sample sign test ( sing test for  paired data)

3.A rank  sum test ( Mann Whitney u test)

4. The one  sample  runs  test

5.Rank  correlation ( described in chapter 10 )

 

 


Related Discussions:- Two sample tests- hypothesis testing

Categories of information in social sciences, Categories of Information in ...

Categories of Information in Social Sciences: It would be useful, particularly in social sciences, to group information into three categories:  •  Statistical Information

Simplex method, Solve the following Linear Programming Problem using Simple...

Solve the following Linear Programming Problem using Simple method. Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0

Line balancing, what happen if line balancing does not exist

what happen if line balancing does not exist

Production option and the ato process design, The plant is using the chase ...

The plant is using the chase production option and the ATO process design. The BOM is illustrated below.   Requirement The factory works on a process layout but

Solved the question, #questionthe following Linear Programming Problem usin...

#questionthe following Linear Programming Problem using Simple method. Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0 ..

Answer, A paper mill products two grade of paper viz., X & Y. Because of ra...

A paper mill products two grade of paper viz., X & Y. Because of raw material restriction, it cannot produce more than 400 tons of grade X paper & 300 tons of grade Y paper in a we

Big M method, Maximize p = (3)x + 2y subject to 2x + y 3x + 4y >= 12

Maximize p = (3)x + 2y subject to 2x + y 3x + 4y >= 12

Assignment problem, a c++ program to implement assignment problem??????????...

a c++ program to implement assignment problem???????????

Linear programming, #questiA paper mill produces two grades of paper viz X ...

#questiA paper mill produces two grades of paper viz X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y pa

Write Your Message!

Captcha
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