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

Components of the product, The manufacturer of the product is finding that,...

The manufacturer of the product is finding that, in order to stay competitive, a number of things need to happen: Components of the product need to be made from more sustaina

Organization of the study, In this project the main focus is conducted inte...

In this project the main focus is conducted interview to educational experts. This interview is base on Delphi technique. This technique is used to attain experts' consensus on ele

Game thoery, In a rectangular game, pay-off matrix of player A is as follow...

In a rectangular game, pay-off matrix of player A is as follows: i) Solve the game. ii) Write down the pay-off matrix of B and then, solve the game.

Lpp, 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

Purchasing power of customers, This is determined by disposable personal ...

This is determined by disposable personal income( personal income minus direct taxes and other deductions ). Some people suggest the use of discretionary income in place of

Making decision - hypothesis testing, Making Decision Lastly a deci...

Making Decision Lastly a decision  should  be arrived as to whether the null  hypothesis is  to be accepted  or rejected. In  this regard the value  of the test  statistic

Demerits of range - measure of dispersion , Demerits  of Range a.It g...

Demerits  of Range a.It gives  importance  to the  two  extreme  values and is very much affected by the extreme items. b.The range  provides  no information  about the  st

Assignment, discuss Dr. Konigs assignment method

discuss Dr. Konigs assignment method

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

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

Llp, Solve the following Linear Programming Problem using Simple method. Ma...

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

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