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

Quantitative research methods, Select one of the topics listed 1-6 below ...

Select one of the topics listed 1-6 below and outline a programme of quantitative research for its investigation.  The assignment  should cover issues of sample design, instrumen

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

scope of the operation research in modern management?

PROBLEM , #A paper mill produces two grades of paper viz., X and Y. Because...

#A 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 paper

Model building, Model building is the essence of the operations research ap...

Model building is the essence of the operations research approach? Discuss. question #Minimum 100 words accepted#

Sample linear programming problems to calculate max profit, The following l...

The following linear programming is written to plan the production of two products. And the company wants to maximize profits. x1 = number of product 1 produced in each batch

Simplex method of LP, MAX: 150 X1 + 250 X2 Subject to: 2 X1 + 5 X2 = 200 - ...

MAX: 150 X1 + 250 X2 Subject to: 2 X1 + 5 X2 = 200 - resource 1 3 X1 + 7 X2 = 175 - resource 2 X1, X2 = 0 2. How many units of resource 1 are cons

Binomial distriubiton - probability distribution , BINOMIAL DISTRIUBITON ...

BINOMIAL DISTRIUBITON This  distribution  (also known  as Bernoulli  distribution ) is useful  in such  an experiment where  there  are only two  outcomes success or failure g

Linear programming, A paper mill produces two grades of paper viz., X and Y...

A 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 paper i

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