1. Determine whether the mean of the differences between two paired samples differs from 0 (or a target value). Please explain further.

2. Calculate a range of values that is likely to include the population mean of the differences. Please explain further.

Paired T-Test and Cl: Befor... v X RESTINGHEARTRATEMTW Paired T-Test and Cl: Before, After Descriptive Statistics Sample N Mean StDev SE Mean Before 20 74.50 4.51 1.01 After 20 72.30 4.05 0.91 Estimation for Paired Difference 95% Cl for Mean StDev SE Mean u difference 2.200 3.254 0.728 (0.677, 3.723) _difference: mean of (Before - After) Test Null hypothesis Ho: H_difference = 0 Alternative hypothesis Hi: p_difference = 0 T-Value P-Value 3.02 0.007