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

Replacement, an electric company which generates and distributes electricit...

an electric company which generates and distributes electricity conducted a study on the life of poles. tha appropriate life data are given in the following table: years after inst

Determination of effectiveness measures, Determination of effectiveness Mea...

Determination of effectiveness Measures: Effectiveness measure is a measure of success of a model in representing a problem and providing a solution. It is the connecting link

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

Macroeconomic environment in which the business operates, Provide a descrip...

Provide a description of the macroeconomic environment in which the business operates noting: a) The overall 'stability' of the political system/government of the country in whi

Linear programming, Solve the following Linear Programming Problem using Si...

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

Properties of normal distribution - probability distribution, Properties of...

Properties of Normal Distribution a.It is a continuous  probability  distribution having  parameters m and . b.The normal  curve is perfectly symmetrical about  the mean (

Mk, Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = ...

Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0

Production option and the ato process design, The plant is using the chase ...

The plant is using the chase production option and the ATO process design. The BOM is illustrated below.   Requirement The factory works on a process layout but

Help me please , This year Jan Rich, who is ranked number one in women''s s...

This year Jan Rich, who is ranked number one in women''s singles in tennis, and Marie Wacker, who is ranked number three, will play 4 times. If Marie can beat Jan 3 times, she will

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