Experiment 1: Does early exposure to school affect IQ?

An educator wants to determine whether early exposure to school will affect IQ. He enlists the aid of the parents of 24 of preschool-age children to participate in this experiment, 12 children go to preschool and 12 children stay home. At the end of 2 years, the IQs of all the children are measured. The results are as follows:

• Experiment title.
• Hypotheses: both alternative and the null
• Mean and standard deviation of each group
• Clear indication of the hypothesis test being conducted and the obtained statistic
• The results and conclusion

IQ of children who went to preschool	IQ of children who stayed home
110	114
121	118
107	103
117	112
115	117
112	106
130	125
116	113
111	109
120	122
117	116
106	104