A neuroscientists wants to see if d-serine affects basal firing rates in cultured neurons. She does a pre-post test design to test her hypothesis, with results below. Run a dependent t-test to the results. Be sure to present null hypothesis, research hypothesis, t obtained, t critical, df and conclusion of findings in terms of the experiment (lay terms). Be sure to outline all formulas used.

Culture	Pretest	Post d-serine
1	12	8
2	13	10
3	14	12
4	15	11