Question: Someone has conducted a study using a Likert assessment and used a Two Group paired sample t-test to calculate results to determine if there is

Someone has conducted a study using a Likert assessment and used a Two Group paired sample t-test to calculate results to determine if there is a stat difference in before and after a treatment (she used SPSS). What kind of data is this? Ordinal or interval? How can I determine if her results are statistically significant?

T-Test [DataSet0] C: \\Users\\kbdecourcy\\Documents\\EMS_Sample_Data . sav Paired Samples Statistics Std. Error Mean N Std. Deviation Mean Pair 1 EMS_PreGottman 31.3667 30 6.31082 1.15219 EMS_PostGottman 34.9667 30 6.65652 1.21531 Paired Samples Correlations N Correlation Sig. Pair 1 EMS_PreGottman & EMS_PostGottman 30 902 000 Paired Samples Test Paired Differences 95% Confidence Interval of the Std. Error Difference Mean Std. Deviation Mean Lower Upper df Sig. (2-tailed) Pair 1 EMS_PreGottman - EMS_PostGottman -3.60000 2.89589 52872 -4.68134 -2.51866 -6.809 29 000

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