**Note**Your answers to the questions below should follow the expectations for homework found here. Due date is on the Dates page.

## Ruffe Feeding II

As a continuation of the previous question, fit a logistic regression model that will allow you to compare the relationship between the probability that a larval Ruffe consumed *Daphnia* and the length of larval Ruffe between larval Ruffe captured in Allouez and Whaleback Bays. [*Note: (1) you should treat Allouez Bay as the reference group and (2) you will have to return to the original data set that included information from Whaleback Bay.*]

- Write the ultimate full model on the transformed scale (i.e., the logit scale). Explicitly define all variables.
- Describe the meaning of each parameter in your ultimate full model.
- Fit your full model in R. Is there a difference between the two locations in the relationship between the probability that a larval Ruffe consumed
*Daphnia*and the length of larval Ruffe? Explain. - Predict, for fish from both locations, the probability that a 6-mm larval Ruffe consumed a
*Daphnia*. - Fit a similar model in R but focused on the occurrence of
*Bosmina*. Is there a difference between the two locations in the relationship between the probability that a larval Ruffe consumed*Bosmina*and the length of larval Ruffe. Explain. - Predict, for fish from both locations, the probability that a 6-mm larval Ruffe consumed a
*Bosmina*.