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

MODERN MANAGEMENT, DISCUSS THE SIGNIFICANCE AND SCOPE OF OPERATION RESEARCH...

DISCUSS THE SIGNIFICANCE AND SCOPE OF OPERATION RESEARCH IN MODERN MANAGEMENT

#title scope.., scope of the operation research in modern management?

scope of the operation research in modern management?

Action Phase, What is The proper meaning of action phase will u help me to ...

What is The proper meaning of action phase will u help me to lern it in deeply????

Model., is model the essence of oprational research.

is model the essence of oprational research.

Lp model, A company produce three sizes of windows fans small,medium and la...

A company produce three sizes of windows fans small,medium and large. The manager has formulated an LP model for production.

Simple graph-correlation and regression analysis, Simple Graph The val...

Simple Graph The values of the two variables are plotted on a graph paper. We get two curves one for x variables and another for y  variables. These  two curves reveal the dir

Linear programming, mile-high microbrewery makes a light beer and a dark be...

mile-high microbrewery makes a light beer and a dark beer. mile-high has a limited supply of barley, limited bottling capacity, and a limited market for light beer. profits are $0.

Steps involved in linear programming problem formulation, Question A - Line...

Question A - Linear Programming is most widely used technique for large number of applications in business industry as well as in various other fields. Describe in brief the steps

Explain briefly the term sensitivity analysis, Question: (a) A company...

Question: (a) A company sells three different products X, Y and Z. The company makes a profit of Rs. 35, Rs. 50 and Rs. 60 per unit on products X, Y and Z respectively. The th

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