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

Classification of documents by information characteristics , Classification...

Classification of documents by information Characteristics: The schemes of classification advocated by Hanson and Grogan are mainly based on the information characteristics of

Duality, For every LP formulation there exists another unique linear ...

For every LP formulation there exists another unique linear programming formulation called the 'Dual' (the original formulation is called the 'Primal'). Same data

Principles of report writing, Principles of Report Writing Reports wri...

Principles of Report Writing Reports writing  may  involve the followings principles . a. Easy to Follow : The body of the  report should  be written in a self evident and

Network problem, Consider the following network where the value on each arc...

Consider the following network where the value on each arc represents the capacity of that arc. Use the augmenting path algorithm to find the value of the maximum flow from node 1

Simplex solution, difference between simplex solution procedure for maximis...

difference between simplex solution procedure for maximisation and minimisation

Determination of the operation, An operation is a combination of different...

An operation is a combination of different actions dealing with raw materials( e, g, men and machines) which form a structure from which an action with regard to broader ob

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

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

Assignment problem, Six Operators are to be assigned to five jobs with the ...

Six Operators are to be assigned to five jobs with the cost of assignment in Rs. given in the matrix below. Determine the optimal assignment. Which operator will have no assignment

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