HypothesisTest2Prop







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org.statcato.statistics.inferential

Class HypothesisTest2Prop

java.lang.Object
org.statcato.statistics.inferential.HypothesisTest2Prop



public class HypothesisTest2Propextends java.lang.Object



A hypothesis test for 2 population proportions.




Author:
Margaret Yau











Constructor Summary


HypothesisTest2Prop(int n1,
int n2,
int x1,
int x2,
double diff,
double confidenceLevel,
int testType,
boolean pool)


          Constructor


 






Method Summary



 java.lang.String
criticalValue()


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



 double
pValue()


          Returns the p-value.



 double
testStatistics()


          Returns the test statistics.


 


Methods inherited from class java.lang.Object


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


 








Constructor Detail




HypothesisTest2Prop

public HypothesisTest2Prop(int n1,
int n2,
int x1,
int x2,
double diff,
double confidenceLevel,
int testType,
boolean pool)

Constructor


Parameters:n1 - number of trials in population 1n2 - number of trials in population 2x1 - number of events in population 1x2 - number of events in population 2diff - hypothesized differenceconfidenceLevel - confidence leveltestType - test type (as defined in HypothesisTest)








Method Detail




testStatistics

public double testStatistics()

Returns the test statistics.



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 valueSee Also:HypothesisTest





pValue

public double pValue()

Returns the p-value.



Returns:p-value















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