com.github.chen0040.si.testing

Class TestingOnValue

java.lang.Object

com.github.chen0040.si.testing.TestingOnValue

public class TestingOnValue
extends Object

Created by xschen on 3/5/2017. H_0: mu = mu_null that is the true population mean is equal to mu_null H_A: mu != mu_null

Constructor Summary

Constructors

Constructor and Description
TestingOnValue()

Method Summary

Modifier and Type	Method and Description
String	getSummary()
void	report()
void	run(double xHat, double s, int n, double xNull) The method computes the p-value for both one-tail and two-tails testing on the mean of a numerical variable for a population
void	run(double xHat, double s, int n, double xNull, double significanceLevel) The method computes the p-value for both one-tail and two-tails testing
String	toString()
boolean	willRejectH0(double significanceLevel, boolean twoTails) The method reject null hypothesis if the p-value calculated from the sample is smaller than the significance level

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

TestingOnValue

public TestingOnValue()

Method Detail

run

public void run(double xHat,
                double s,
                int n,
                double xNull)

The method computes the p-value for both one-tail and two-tails testing on the mean of a numerical variable for a population

Parameters:

xHat - the point estimate of the sample mean

s - the point estimate of the sample standard deviation

n - the sample size

xNull - the null value for the mean of the population under null hypothesis

run

public void run(double xHat,
                double s,
                int n,
                double xNull,
                double significanceLevel)

The method computes the p-value for both one-tail and two-tails testing

Parameters:

xHat - the point estimate of the sample mean

s - the point estimate of the sample standard deviation

n - the sample size

xNull - the null value for the mean of the population under null hypothesis

significanceLevel - the default significance level included

willRejectH0

public boolean willRejectH0(double significanceLevel,
                            boolean twoTails)

The method reject null hypothesis if the p-value calculated from the sample is smaller than the significance level

Parameters:

significanceLevel - the significance level, usually about 0.05

twoTails - true if the testing is two tails; false otherwise

Returns:

true if the null hypothesis H_0 is rejected; false if H_0 fails to be rejected

getSummary

public String getSummary()

toString

public String toString()

Overrides:

toString in class Object

report

public void report()