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

Integer programming, An integer programming problem is identical to a linea...

An integer programming problem is identical to a linear programming problem except that one or more decision variables are constrained to take integer values. Such problems cannot

Liner programming problem, A constraints in an LPP restricts? (Value of obj...

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

Least cost methods, The NW  corner  rule  described  earlier considers only...

The NW  corner  rule  described  earlier considers only  the availability  and supply  requirements  in making  assignments. It takes  no account  of the shipping  costs  given  in

Linear problem, #q A paper mill produces two grades of paper viz., X and Y....

#q 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 pape

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

LLp, 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

Operations research, state phases of operations research and and their impo...

state phases of operations research and and their importance in solving problems

Uses of range - measure of dispersion, Uses of Range a.Range is suitab...

Uses of Range a.Range is suitable  measure  of dispersion  when the  data are too  scattered to justify the  computation of a more precise  measure of dispersion. b.In rece

Describe multinational corporations, Question 1 -Though society as well as...

Question 1 -Though society as well as culture do not appear to be a part of business situations, yet they are actually key elements in showing how business activities will be cond

Range - measure of dispersion , RANGE Range  is the difference  betw...

RANGE Range  is the difference  between  the highest  and the  lowest  value is  series. This is the simplest  absolute measure  of dispersion. Symbolically  : R= L- S

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