org.statcato.statistics.inferential

Class HypothesisTest1Prop

java.lang.Object

org.statcato.statistics.inferential.HypothesisTest1Prop

public class HypothesisTest1Prop
extends java.lang.Object

A hypothesis test for 1 population proportion.

Since:

1.0

Constructor Summary

Constructors

Constructor and Description
HypothesisTest1Prop(int n, double p, double confidenceLevel, int testType) Constructor.

Method Summary

Modifier and Type	Method and Description
java.lang.String	criticalValue() Returns the critical value corresponding to the given confidence level and type of test.
double	pValue(double pHat) Returns the p-value corresponding to pHat in a z distribution.
double	testStatistics(double pHat) Returns the test statistics for the given sample proportion pHat.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HypothesisTest1Prop

public HypothesisTest1Prop(int n,
                           double p,
                           double confidenceLevel,
                           int testType)

Constructor.

Parameters:

n - sample size

p - hypothesized proportion

confidenceLevel - confidence level

testType - (as defined in HypothesisTest)

Method Detail

testStatistics

public double testStatistics(double pHat)

Returns the test statistics for the given sample proportion pHat.

z = (pHat - p) / sqrt(p * (1-p) / n)

Parameters:

pHat - hypothesized population proportion

Returns:

test statistic z score

criticalValue

public java.lang.String criticalValue()

Returns the critical value corresponding to the given confidence level and type of test. Uses the z distribution.

Returns:

critical value

See Also:

HypothesisTest

pValue

public double pValue(double pHat)

Returns the p-value corresponding to pHat in a z distribution.

Parameters:

pHat - sample proportion

Returns:

p-value