Let us look at another home condition in this exercise:

does the student have a computer for school work at home? Using a random sample of 500 observations from the PISA database, to be found in the data file PISA Sample, analyze the difference in means of the mathematics and reading scores of the students who possess such a computer and those who do not. In the file, 1 for Computer_for_school_work indicates the computer’s presence, while 2 indicates its absence. Assume normality.