Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance $\alpha$, and sample size $n$. Two-tailed test, $\alpha=0.10, n=7$ Click the icon to view the t-distribution table. The critical value(s) is/are (Round to the nearest thousandth as needed. Use a comma to separate answers as needed.)

Step 1 ：In a two-tailed test, the rejection regions are at both ends of the distribution. The level of significance, \(\alpha\), is split between these two tails. So, each tail will contain \(\alpha/2 = 0.10/2 = 0.05\) of the total area under the curve.

Step 2 ：The critical value is the t-score that corresponds to this area in the tail. We can find this value from the t-distribution table. However, the t-distribution depends on the degrees of freedom, which is \(n-1 = 7-1 = 6\) in this case.

Step 3 ：Using a t-distribution table with \(\alpha = 0.05\) and degrees of freedom \(df = 6\), we find the critical value to be approximately 1.943.

Step 4 ：The rejection regions are the t-scores less than -1.943 or greater than 1.943.

Step 5 ：Final Answer: The critical value is approximately \(\boxed{1.943}\). The rejection regions are the t-scores less than \(\boxed{-1.943}\) or greater than \(\boxed{1.943}\).