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

Linear programming problem, Solve the following Linear Programming Problem ...

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

Linear Programming Problem, A paper mill produces two grades of paper viz.,...

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

PERT, how does it work

how does it work

Methodology, what are the methodology of operation research

what are the methodology of operation research

Post-optimal analysis, It can be seen from the optimal solution for the fou...

It can be seen from the optimal solution for the foundry problem that two resources, raw material-1 and labor, are exhausted whereas the other two resources, raw materi

Word problems based on formulation of linear programming, Word problems bas...

Word problems based on formulation of linear programming problems. 2.   A manufacturer produces nuts and bolts for industrial machinery. It takes 1 hour of work on machine 1 an

Use of t -tables - hypothesis testing , Use of t -tables            ...

Use of t -tables            Similar  to normal  curve  tables  there  exist t- distribution  tables. However  whereas the properties of  the normal  curve are constant for all

information on research done, Information on Research Done Informatio...

Information on Research Done Information on Doctoral research work already done  is available from  the followings  sources: a. Bibliography of Doctoral  Dissertations Acce

Simplex method, Maximize Z =3x+4x subject to x1+x2 =3 2x1+3x2 =4 x1,x2 =0

Maximize Z =3x+4x subject to x1+x2 =3 2x1+3x2 =4 x1,x2 =0

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