Scenario: Below are the results of an independent samples t-test...

Question

Scenario: Below are the results of an independent samples t-test...

Scenario: Below are the results of an independent samples t-test used to determine if two test forms were of the same difficulty (as measured by mean scores of a matched sample on each form). The test forms are A and B. Please answer the questions that follow the output:

Group Statistics:

Test Form A: N= 64 Mean= 16.0469 Std. Deviation= 3.44770 Std. Error Mean= .43096

Test Form B: N=73 Mean= 15.2192 Std. Deviation= 3.78684 Std. Error Mean= .44322

Levene's Test for Equality of Variances:

Equal variances assumed: F=1.791 Sig= .183 T=1.331 DF=135 Sig (2 tailed)= .186

Equal variances not assumed F= nothing Sig=Nothing T=1.339 DF=134.798 Sig (2 Tailed)= .183

Question:

A) Which form, A or B, was associated with the higher mean/higher scores?

B) What is the significant level (sig) for our t-test?

C) Based on the criteria of .05 we've been using, is the t-test telling us our means are statistically different from one another?

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