A researcher wanted to determine the [ Choose ] effectiveness of a new cream in the treatment of warts. She identified 138 Individuals who had warts and provided them with medicated cream. After one month, she compared the proportion of successful patients to the medicated cream's stated success rate. A nutritionist wants to test the claim that the [ Choose ] V mean weight for males over 40 is greater than 200 pounds. Researchers want to determine if adult males who take a single aspirin daily experience a [ Choose ] lower proportion of heart attacks than adult males who do not take a single aspirin daily. To determine if seat location and course grade are associated, two professors [ Choose ] V randomly assigned 400 students in a general education statistics course to one of four groups based on who