TTest2 Command

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TTest2[<List of Sample Data 1>,<List of Sample Data 2>,<Tail>,<Boolean Pooled>]
Performs a T test of the difference between two population means using the given lists of sample data. Tail has possible values "<", ">" , "≠" that determine the following alternative hypotheses:
"<" = difference in population means < 0
">" = difference in population means > 0
"≠" = difference in population means ≠ 0
If Pooled = true, then population variances are assumed equal and sample standard deviations are combined in calculation.
If Pooled = false, then population variances are not assumed equal and sample standard deviations are not combined.

Results are returned in list form as {Probabilty value, T test statistic}.

TTest2[<Sample Mean 1 >,<Sample Standard Deviation 1>, <Sample Size 1>, <Sample Mean 2 >,<Sample Standard Deviation 2 >, <Sample Size 2>, <Tail>,<Boolean Pooled>]
Performs a T test of the difference between two population means using the given sample statistics. Tail and Pooled are defined as above.
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