t test and p values coefficient

i have 3D matrix (some features from an image) and i want to preform t test and get p values for these images

[Star Strider]

What statistical hypothesis are you testing?

[the cyclist]

This is not twitter. Please feel free to use more than 140 characters to describe what you are trying to do.

For example, what is the null hypothesis that you are trying to test with the t test? What are the variables represented in the 3D array?

The more information you give us, the less we have to guess, and the more likely you are to get some useful help.