Perhaps the size of an animal’s brain determines intelligence for that species. Or perhaps the weight of the brain. Or perhaps their body size or weight have a role. The following chart compares several animals’ brain and body sizes and weights.

Calculate the correlation coefficient and use it and Table 10 of Appendix B to determine a 95% confidence interval on for each of the following cases:

a. Brain length and brain weight

b. Brain length and body weight

c. Brain weight and body weight

Transcribed Image Text:

Brain Length Brain Weight Body Length Body Weight Species (cm) (g) (cm) (g) Human 15 1400 100 62,000 Baboon 8 140 75 30,000 Monkey 5 100 30 7,000 Camel 15 680 200 529,000 Dolphin Missing 1700 305 160,000 Kangaroo Cat 55 5 56 150 35,000 5 30 60 3,300 Raccoon 5.5 39 80 4,290 Rabbit Squirrel Frog 53 5 12 30 2,500 3 6 20 900 2 10 0.1 10 18