Results

The results are:

 

 

 

 

 

Result

Description

 

 

 

 

Test T

T–Test statistic.

 

Prob

Probability associated with the

 

 

T–Test statistic.

 

Critical T

Boundary value of T associated

 

 

with the α level that you supplied.

 

Critical x

Boundary value of x required by

 

 

the α value that you supplied.

 

 

 

Two–Sample T–Test

Menu name

T–Test: ∝1 – ∝2

 

The Two–sample T–Test is used when the population

 

standard deviation is not known. On the basis of statistics

 

from two samples, each sample from a different population,

 

this test measures the strength of the evidence for a selected

 

hypothesis against the null hypothesis. The null hypothesis is

 

that the two populations means are equal (H 0: ∝1 = ∝2).

 

You select one of the following alternative hypotheses against

 

which to test the null hypothesis

 

H1:∝1 < ∝2

 

H1:∝1 > ∝2

 

H1:∝1 ≠ ∝2

9-14

Inference aplet