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

Ans, A paper mill produces two grades of paper viz., X and Y. Because of ra...

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

Linear programming , #quesQuestion. a paper mill produces two grades of pa...

#quesQuestion. a paper mill produces two grades of paper viz.,xand y.Bacause of raw material restrictions, it cannot produce more than 400 tones of grade x paper and 300 tons of g

Sources of stress and job burnout, QUESTION Discuss the major sources o...

QUESTION Discuss the major sources of stress and job burnout and outline the strategies for managing stress. QUESTION How can you use the „Johari Window Model? as a

LPP FORMULATION., 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

Decision theory, the following table gives place under different states of ...

the following table gives place under different states of nature Strategies States of nature s1 s2 s3 A 10000 3000 2000 B

CORE TECHNOLOGY TO WATCH IN FUTURE, AI TECHNOLOGY''S CURRENT AND POTENTIAL ...

AI TECHNOLOGY''S CURRENT AND POTENTIAL FUTURE APPLICATIONS

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

Disadvantage of standard deviation - measure of dispersion, Disadvantage ...

Disadvantage  of standard Deviation It is not  easy  to understand  and calculate. It gives  more  weight  to the extremes  and less  to the items   nearer to mean. Since

Game theory, if there were n workers and n jobs there would be

if there were n workers and n jobs there would be

Linear programming, #questiona paper mill produce two grades of x&y.becouse...

#questiona paper mill produce two grades of x&y.becouse of raw material reswtriction

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