1. What is the average age (measured by the variable "age") of the sample in the GSS93 subset.sav data set?
2. Is there a significant difference in the age of those who favor the death penalty for murder (measured by the variable "cappun") and those who oppose the death penalty? (Hint: using the independent-samples t-test)
3. Using the Cars.sav data set, does country of manufacture (measured by the variable "origin") make a difference in the average MPG (miles per gallon) for automobiles? (Hint: using the independent-sapmles t-test or one-way ANOVA)