Problem regarding the crab claws

Assignment Help Basic Statistics

Reference no: EM131012007

Crab Claws. Reconsider the data on claw closing force and claw size for three species of crabs, shown in Exercise 7.22. Display 10.18 shows output from the least squares fit to the separate lines model for the regression of log force on log height. The regression model for log force was !flforce j lheight, SPECIESgD ?0 C ?1lheight C ?2lb C ?3cp C ?4.lheight x lb/ C ?5.lheight x cp/; where lheight represents log height, lb represents an indicator variable for the second species, and cp represents an indicator variable for the third species. The sample size was 38.

(a) How many degrees of freedom are there in the estimate of a?

(b) What is the p-value for the test of the hypothesis that the slope in the regression of log force on log height is the same for species 2 as it is for species 1?

(c) What is a 95% confidence interval for the amount by which the slope for species 3 exceeds the slope for species 1?

Reference no: EM131012007

Questions Cloud

Question regarding the kentucky derby : Reconsider the Kentucky Derby winning times and speeds from Exercise 9.20. Test whether there is any effect of the categorical factor "Track" (with seven categories) on winning speed, after accounting for year. The full model will have Year and th..

Toxic effects of copper and zinc : In a study of the joint toxicity of copper and zinc, researchers randomly allocated 25 beakers containing minnow larvae to receive one of 25 treatment combinations.

Question regarding the butterfly occurrences : Display 10.19 summarizes results from the regression of the log of the number of butterfly species observed on the log of the size of the reserve and the number of days of observations, from 16 reserves in the Amazon River Basin.

Find the angle of elevation : Howard is flying a kite and wants to find its angle of elevation. The string on the kite is 32 meters long and the kite is level with the top of a building that he knows is 28 meters high.

Problem regarding the crab claws : Reconsider the data on claw closing force and claw size for three species of crabs, shown in Exercise 7.22. Display 10.18 shows output from the least squares fit to the separate lines model for the regression of log force on log height.

At what speed is fuel economy greatest : The fuel economy (in miles per gallon) of a certain car is E(x) = -0.01x2 + 0.52x +10.4, where x is the driving speed (in miles per hour, 20 ≤ x ≤ 60). At what speed is fuel economy greatest?

Galileo data-brain weight : Why is horizontal distance, rather than height, the response variable?

What is the linear cost function : You first decide to create a linear cost function based on this data. What is the linear cost function, and how much lemonade can Herman make according to this model?

Estimate the cost of construction for this project : Estimate the cost of construction for this project. Assume the estimates are fully loaded, ie they include labor, materials, applicable indirect costs such as overhead, etc

User Account

All Pages