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java.lang.Objectorg.statcato.statistics.inferential.HypothesisTest2MeanSigmaUnknown
public class HypothesisTest2MeanSigmaUnknown
A hypothesis test for 2 population means (population standard deviations sigmas unknown).
Constructor Summary | |
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HypothesisTest2MeanSigmaUnknown(int n1,
int n2,
double xBar1,
double xBar2,
double s1,
double s2,
double diff,
double confidenceLevel,
int testType,
boolean varEqual)
Constructor. |
Method Summary | |
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java.lang.String |
criticalValue()
Returns the critical value corresponding to the given confidence level and type of test. |
int |
DOF()
Returns the degree of freedom. |
double |
pValue()
Returns the p-value. |
double |
testStatistics()
Returns the test statistics. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public HypothesisTest2MeanSigmaUnknown(int n1, int n2, double xBar1, double xBar2, double s1, double s2, double diff, double confidenceLevel, int testType, boolean varEqual)
n1
- sample size 1n2
- sample size 2xBar1
- sample mean 1xBar2
- sample mean 2s1
- sample standard deviation 1s2
- sample standard deviation 2diff
- hypothesized difference in population meanconfidenceLevel
- confidence leveltestType
- type of test (as defined in HypothesisTest
)varEqual
- whether population variances are assumed equalMethod Detail |
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public double testStatistics()
public int DOF()
public java.lang.String criticalValue()
HypothesisTest
public double pValue()
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