A doctor would like to estimate the mean difference in height of pairs of identical twins. The doctor randomly selects 8
pairs of identical twins and determines the current height, in inches, of each twin. The data are displayed in the table.
Pair
Twin 1
Twin 2
1
66
67
2
64.5
65
3
72
72
4
70
69.5
5
65
65
6
64.5
63
7
48
49
8
54
54.5
A 95% confidence interval for the mean difference (twin 1- twin 2) in height is (-0.823, 0.573). Based on the
confidence interval, is it reasonable to claim there is no difference in the heights of twins?
No, 0 is contained in the 95% confidence interval.
Yes, O is contained in the 95% confidence interval.
No, the 95% confidence interval contains positive numbers.
Yes, the 95% confidence interval contains negative numbers.