A researcher randomly selects 6 fathers who have adult sons and records the fathers' and sons' heights to obtain the data below. Determine if sons are taller than their fathers at the a = 0.1 level of significance. The normal probability plot and boxplot indicate that the differences are approximately normally distributed with no outliers.
Observation Height of father (inches) Height of son (inches)
1. 72.8, 77.4
2. 68.4, 69.0
3. 67.9, 69.2
4. 69.9, 68.6
5. 74.5, 72.4
6. 69.2, 70.5
Using the differences (father's height) - (son's height), what is your conclusion regarding H0
A. Do not reject because t0 is less than - ta.
B. Reject H0 because t0 is less than - ta.
C. Reject H0 because t0 is greater than - ta.
D. Do not reject H0 because t0 is greater than - ta.