The t-value corresponding to an area of 0.15 in the right tail with 10 degrees of freedom is 1.093.
Given that the area in the right tail is 0.025, we look for the t-value such that the area under the t-distribution curve to the right of this t-value is 0.025.
Using the t-distribution table or a software function with degrees of freedom 26, we find the t-value.
The t-value corresponding to an area of 0.025 in the right tail with 26 degrees of freedom is 2.056.