Excel users should note that empty cells (representing missing data) must be removed. For following variables conduct a test at the 5% significance level to determine whether Democrats and Republicans (PARTY: 1 = Democrat, 2 = Republicans) differ
Researchers at the University of Ohio surveyed 219 students and found that 148 had Facebook accounts. All students were asked how for their current GPA. Do the data allow us to infer that Facebook users have lower GPAs?
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