Z-test - hypothesis testing, Operation Research

Assignment Help:

Z-Test

Prof. Fisher has  given a method  of testing the significance of the correlation coefficient in small  samples. According  to this method the  coefficient of correlation is transformed into Z  and hence the  name  transformation. The statistic Z given by  prof. Fisher is used  to test:

a.Whether  an observed value  of r differs significantly from some  hypothetical value or.

b.Whether two samples values of  r differ significantly,

For  testing whether r differs significantly from zero the t- test is preferable.

In order to apply the test  we have to calculate Z and by applying Fisher transformation and then  calculate the  value  of the standard  normal  variate.

                 Z- ε / 1/√n-3


Related Discussions:- Z-test - hypothesis testing

Cost- sampling decisons, Cost- sampling decisons                   ...

Cost- sampling decisons                         σ x¯ =S/√n       Where is the  standard  error of he mean is the standard devaluation of  the population and n is t

Set of pareto optimal policies, Problem: A policy maker is considering seve...

Problem: A policy maker is considering several policy options that lead to different utility levels of different individuals a) Which Policy is would be optimal according t

Assignment, discuss Dr. Konigs assignment method

discuss Dr. Konigs assignment method

Cgj, application&techniques

application&techniques

Scope., what is the scope of operational research in india ? explain with t...

what is the scope of operational research in india ? explain with the job names.

Sources of stress and job burnout, QUESTION Discuss the major sources o...

QUESTION Discuss the major sources of stress and job burnout and outline the strategies for managing stress. QUESTION How can you use the „Johari Window Model? as a

Information resources - selection principles, INFORMATION RESOURCES - SELEC...

INFORMATION RESOURCES - SELECTION PRINCIPLES: Selection of materials for a library requires sagacity, adroitness and attention to people's needs for everything from books and

OR models, Explain why it may be advantageous to build models to help in so...

Explain why it may be advantageous to build models to help in solving a decision problem.

Medical industry payments to physicians, Medical Industry Payments to Physi...

Medical Industry Payments to Physicians The relationships between physicians and medical related companies in the United States, generally acknowledged to be familiar given th

Operations research, six operators are to be assigned to the 5 jobs with th...

six operators are to be assigned to the 5 jobs with the cost of assignments

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