State

Make sure to state what your parameter (μ_diff) means in context!

Plan - One-sample (paired) t-test for μ_diff

Random sample: Must be determined by you. Is this a random sample or random assignment in an experiment?

10% rule: Must be determined by you. Is your sample size smaller than 10% of the population?

Calculate

Make sure to draw a t-distribution curve, label it, and shade in the appropriate p-value.

Conclude

Please keep in mind that this conclusion is a generic conclusion based on the values put into the table, but will not always reflect what a proper conclusion should look like in context.