What parameter would we like to perform inference about? Group of answer choices p-hat = population proportion of people who select Dr. Pepper with real cane sugar as the "better tasting" soda pi = population proportion of people who select Dr. Pepper with real cane sugar as the "better tasting" soda pi = sample proportion of people who select Dr. Pepper with real cane sugar as the "better tasting" soda p-hat = sample proportion of people who select Dr. Pepper with real cane sugar as the "better tasting" soda