Calculate the test statistics for the main effects and interaction term in the model. Which are signicant predictors of optical density? (3pt) Interpret the estimate for pH_ocidic in context. (2pt) Calculate the slope of Room Temp on optical density for the bacterium grown in the acidic culture. Interpret it in context. (3130 If Dany measured an acidic culture during a time when the lab was 2C lower than average, find the predicted optical density after 24 hours of growth. (2130 Q - R work (must be done in R) y and paste your R code and output into a word document to submit to Canvas. ow these instructions to import the necessary dataset: Before opening the dataset needed for this problem, you'll need to call the "car" package. Run the following line of code: > Iibrary(car) Now you can import the " Robey" dataset and use it to answer the question below. Name the data frame with your UT EID: > my_eid