Question

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The IQ was measured for 35 twins. Is there any difference in IQ between twins?

DATA

Twin 1	Twin 2
113	109
94	100
99	86
77	80
81	95
91	106
111	117
104	107
85	85
66	84
111	125
51	66
109	108
122	121
97	98
82	94
100	88
100	104
93	84
99	95
109	98
95	100
75	86
104	103
73	78
88	99
92	111
108	110
88	83
90	82
79	76
97	98

Answer 1

conclusion : here p-value > alpha(0.05) so we do not reject the null hypothesis.

i.e. There is no significant difference between in IQ between twins.