Raul lives in Richmond and his brother Alejandro lives in Aberdeen. They both complained about the high prices of avocados where they live, so they wondered if, on average, avocados were more expensive in one of their cities. Each of them took a random sample of shops in their city and got the price of avocado from each shop.
What type of statical test used in this case?
A. A paired t-test for the mean difference
B. A two-sample z-test for the difference of proportions
C. A t-test for slope
D. A two-sample t-test for the difference of means
E. A z-test for a proportion
