t-Test: Paired Two Sample for Means
	A1CT1	A1CT2
Mean	10.19	8.32
Variance	10.33	6.03
Observations	20.00	20.00
Pearson Correlation	0.73
Hypothesized Mean Difference	0.00
df	19.00
t Stat	3.78
P(T<=t) one-tail	0.00
t Critical one-tail	1.73
P(T<=t) two-tail	0.00
t Critical two-tail	2.09

• Did the intervention performed between the A1c collected at Time 1 (A1CT1) and the A1c collected at Time 2 (A1CT2) statistically significantly decrease the percentage A1c for this sample of participants? How do you know?
• Did you look at the one-tailed or two-tailed test to inform your answer?
• Does the paired sample provided meet the requirements for a paired samples t-test? Why or why not?