A pilot study was conducted to determine whether a particular weight Last app was useful for helping people lose weight. For each of the 20 individuals enrolled, weight was measured both at baseline and at follow-up for each individual. What is the most appropriate test for this scenario?

Group of answer choices

Two group t-test equal variances

Chi-square Test

Paired t-test

Test of Correlation

Mann-Whitney U test

Two group t-test unequal variances