what are the results of the t-test? Is the test statistically significant or not? Should we reject or fail to reject the null hypothesis?

Case Processing Summary Cases Valid Missing Total N Percent N Percent N Percent DifferenceScore 18 100.0% 0 0.0% 18 100.0% Descriptives Statistic Std. Error DifferenceScore Mean -2.2222 .54566 95% Confidence Interval Lower Bound -3.3735 for Mean Upper Bound -1.0710 5% Trimmed Mean -2.1914 Median -2.5000 Variance 5.359 Std. Deviation 2.31505 Minimum -7.00 Maximum 2.00 Range 9.00 Interquartile Range 4.00 Skewness -.048 536 Kurtosis -.330 1.038