Question: a. The research hypothesis is there was a mean difference in the average years of schooling among the 2018 GSS adults between those who were

a. The research hypothesis is there was a mean difference in the average years of schooling among the 2018 GSS adults between those who were liberal and those who were conservative. The null hypothesis is there was not a mean difference in the average years of schooling among the 2018 GSS adults between those who were liberal and those who were conservative. is this a one tailed or two tailed hypotheses test

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