Compute the related samples t on data set below. Assume a standard deviation of $2.88$, a two-tailed test, and an alpha level of .05. What is $t_{o b t} ?$ \begin{tabular}{|cc|} Thline Condition 1 & Condition 2 Thline 15 & 20 W \hline 11 & 10 \hline 13 & 15 W Thline 7 & 12 Thline 8 & 14 \hline \end{tabular) $-2.63$ Question 21 $0 / 2 \mathrm{pts} $ What can we conclude about the related samples $t$ data? Our t-obtained falls in the region of rejection, so we reject the null hypothesis. There is a significant difference between condition 1 and condition 2 Our t-obtained does not fall in the region of rejection, so we fail to reject the null hypothesis. There is no significant difference between condition 1 and condition 2. Our t-obtained falls in the region of rejection, so we fail to reject the null hypothesis. There is no significant difference between condition 1 and condition 2 Our t-obtained does not fall in the region of rejection, so we reject the null hypothesis. There is a significant difference between condition 1 and condition 2 . CS.VS. 1283