Dr. Doofenshmirtz is interested to know how his latest evil invention, the Evil-inator, influences people’s evil tendencies, compared to his last invention, the Meanie-inator. He randomly assigns 10 people to be zapped by the Evil-inator and another 10 to be zapped by his Meanie-inator. He assesses their evil tendencies on a scale of 1 – 100, with higher scores indicating more evil tendencies. Which test would Dr. Doofenshmirtz use to see whether the Evil-inator makes people more evil than the Meanie-inator? Group of answer choices A. Correlated Groups t-test B. Independent Groups t-test C. One-Sample T-Test D. One-Way Between-Subjects ANOVA

A researcher has participants expecting to receive either painful or mild electrical shocks during a study wait in a quarter-full waiting room with other participants. He then measures whether they choose to sit next to other participants or if they sit far away on their own. What is the best test to run for this study and why?

Some people seem to believe that you can fix anything with duct tape. Even so, many were skeptical when researchers announced that duct tape may be a more effective and less painful alternative than liquid nitrogen, which doctors routinely use to freeze warts. An article described a study conducted at a medical center. Patients with warts were randomly assigned to either the duct tape treatment or the more traditional freezing treatment. Those in the duct tape group wore duct tape over the wart for 6 days, then removed the tape, soaked the area in water, and used an emery board to scrape the area. This process was repeated for a maximum of 2 months or until the wart was gone. Data consistent with values in the article are summarized in the following table. Treatment n Number with WartSuccessfully Removed Liquid nitrogen freezing 103 60 Duct Tape 101 88   Do these data suggest that freezing is less successful than duct tape in removing warts? Test the relevant hypotheses using…

Cyclozocine was an alternative to methadone for treating heroin addiction. The following data came from 14 males who were chronic heroin addicts. After cyclozocine had removed the addicts' physical dependence on heroin, they were asked a batter of questions to assess their psychological dependence. The test scores are called Q-Scores and high values represent less psychological dependence. The Q-Scores were as follows: 51, 53,43, 36, 55, 55, 39, 43, 45, 27, 21.26, 22,43 Prom past experience, the mean score for addicts who have not had a cyclozocine treatment is about 28. Is cyclozocine an effective treatment for psychological dependence?