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

Individual user interests - information resources, Individual User Interest...

Individual User Interests: More specific information about users could cover the following:  Subjects and associated interest - e.g. specific subjects, allied subjects;

Explain the history of boots and shoes, Question 1 Explain any five access...

Question 1 Explain any five accessory industries Question 2 Explain the history of boots and shoes Question 3 Write short notes on following- Types of Gujarati emb

Simplex method, Solve the following Linear Programming Problem using Simple...

Solve the following Linear Programming Problem using Simplex method. Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0

Degrees of freedom, Determining Degrees of Freedom   One of the prer...

Determining Degrees of Freedom   One of the prerequisites for using chi square test is that we should calculate the number of degrees of freedom for the contingency table. T

LPP., A constraints in an LPP restricts? (Value of objective function,Value...

A constraints in an LPP restricts? (Value of objective function,Value of decision variable,Use of available resources, uncertainty of optimum value) please help me to find out righ

Title page - report writing presentation, Title  Page Tthe title page...

Title  Page Tthe title page  should  indicate  the topic  on which  the report has been  prepared the  person  or agency who has  prepared it the  person  a agency for whom it

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

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