Question

Response Questions Part A To B A. The black-capped chickadee (Poecile atric apilla) is a smal songbird commonly found in the northern United S ta tes and Canada. Chickadees often live in cooperative flocks, using a complex language to communicate about food sources and predator threats. In an experiment, researchers recorded chickadee vocalizations in an aviary when pre sen ted with predators ofvarious sizes. The table contains data representing the average number of D notes per chickadee waming call for each type of predator, along with the predator wing span (in centimeters). Predator wingspan Number of D notes umber Predator wingspan D notes Predator (cm) per call ca Pyzmyowl31.231.2 8.838.8 57.657.6 60.660.6 0.680.6 89.289.2 3.963.96 Gyrfalcon 1.111.1 2252.25 4.094.09 Saw-whet owl Kestrel Merlin Cooper's hawk Short-eared o 3.043.04 3.183.18 2.282.29 Pere gnine talcon Red-tailed hawk Great horned owi Creat gravow 120.0120.0 120.0120.0 120.4120.4 132.2132.2 138.0138.0 2.802.80 2.562.56 2.462.46 2.062.06 1.361.36 h-1ezged hawk Prairie fálcon 109.9109.9 Find the correation betw een the number of D notes per call and wingspan. (Enter your answer round ed to four decimal places) B. Measuring tree heightis not an easy task. How well does trunk diameter predict tree height? A survey of 958 live trees in an old-growth forest in Canada provides us with the information: The mean tree height is 15.6 meters (m), with standard deviation 13.4 m; the mean diameter, mea sured at "breast height (1.3 m above ground), is 23.4 centimeters (cm), and the standard deviation is 23.5 cm. The correlation between the height and diameter is very high: 0.96 (a) What is the slope of the regression line to predict tree height (in meters) from trunk diameter (in centimeter s)? (Enter your answer rounded to four decimal p laces.) What is the intercept of theregression line to predict tree height (in meters) from trunk diameter in centimeters)? (Enter your answer rounded to thr ee decimal places) Regression me 60 50 30 20 10 0 0 25 50 Trunk diameter (cm) 75 100 The corr ect regression line is blue.

Answer 1