Question

Question 2: An educator wants to determine whether early exposure to school will affect IQ. He enlists the ai...

An educator wants to determine whether early exposure to school will affect IQ. He enlists the aid of the parents of 12 pairs of preschool-age identical twins who agree to let their twins participate in this experiment. One member of each twin pair is enrolled in preschool for 2 years while the other member of each pair remains at home. At the end of the 2 years, the IQs of all the children are measured. The results follow.

	IQ
Pair	Twins at preschool	Twins at home
1	109	116
2	122	119
3	110	106
4	119	115
5	114	118
6	112	103
7	128	125
8	114	116
9	108	107
10	117	123
11	117	116
12	106	104

Does early exposure to school affect IQ? Use α = 0.052 tail.

Answer 1