Chapter 3 Test: Regression (10 MCQ, 50 points; FRQ, 50 points) . A field researcher who studies lions conjectured that the more time a cub spends playing, the sooner the cub will begin to hunt. Observational data were collected from 20 lion cubs. The researcher recorded how long they spent playing and the age when they began hunting. Because male and female lions have different hunting behaviors, the researcher recorded the data for males and females separately. The two scatterplots show the data for the 10 female lions and the 10 male lions. FEMALE LION CUBS MALE LION CUBS 167 15+ 15+ 14 14- Age at First Hunt (months) 13- 13 Age at First Hun 12- 12 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 Average Daily Play Time (hours) Average Daily Play Time (hours Based on the scatterplots, for which gender does there appear to be evidence that the more time a lion cub spends playing, the sooner the cub is likely to begin hunting? A. For female cubs only B. For male cubs only C . For both male cubs and female cubs, with equal evidence D. For both male cubs and female cubs, with more evidence for female cubs than for male cubs E . For neither male cubs nor female cubs 2. A study was conducted to determine if height is a good predictor of salary. The correlation was calculated. Of the following changes to the data, which could cause the correlation to change? Using the same data to determine if salary is a good predictor of height. Converting each height from inches to centimeters. Removing one of the data points which was found to be erroneous. (A I only (B) Il only (C) Ill only (D) Il and Ill (E) I and Ill