Before you begin your proctored assessment, pick up each piece of paper (and/or white board) and show the front and back side to the camera. Make sure to do it slowly enough that any writing will be clearly visible.  Remember that no physical calculators, smart glasses, smart watch or other people or electronic aids are permitted in the testing area. Remove any applicable items before starting. Practice showing your papers now. Get a sheet of paper (it is okay to leave the test area if you need to grab one) and hold it up to the camera. Show both sides and count to at least three slowly. Click OK as your answer choice

Question 3 Prediction (14 points) Use testData for this question i)(6 points) Using the testData and models model1 (2a), model2(2b), model2_reduced (2d), predict ‘annual_yield_kg’ for each row in testData. Calculate the precision measure for each model’s predictions. ii)(2 points) Which model performed the best according to the value of precision measure? iii)(3 points) Interpret the precision measure value of model1 in the context of prediction accuracy. iv)(3 points) Suppose two models have nearly identical precision measures on the test data. Which model would you prefer, and why?

A patient taking a medication primarily metabolized by a specific CYP450 enzyme begins another medication that strongly inhibits that enzyme. Which effect is most likely?

A heat conducting rod,  0.90 m long, is made of an aluminum section that is  0.10 m long, and a copper section that is  long. Both sections have cross-sectional areas of  The aluminum end is maintained at a temperature of  and the copper end is at . The thermal conductivity of aluminum is 205 W/m ∙ K and of copper is 385 W/m ∙ K. Steady state has been reached, and no heat is lost through the well-insulated sides of the rod. The temperature of the aluminum-copper junction in the rod is closest to

The figure (not to scale) shows a pV diagram for 1.8 g of helium gas (He) that undergoes the process 1 → 2 → 3. Find the value of V1. The ideal gas constant is R = 8.314 J/mol ∙ K = 0.0821 L ∙ atm/mol ∙ K, and the atomic weight of helium is 4.0 g/mol. 

If the pressure of an ideal monatomic gas is increased while the number of moles is kept constant, what always happens to the average translational kinetic energy of one atom of the gas? Choose the best answer.  

Two metal rods, one silver and the other copper, are both attached to a steam chamber as shown in the figure, with a temperature of 100°C, at one end, and an ice water bath, with a temperature of 0°C, at the other. The rods are 5.0 cm long and have a square cross-section, 2.0 cm on a side. When steady state has been reached, how much heat flows through the two rods in 1.0 min? The thermal conductivity of silver is 417 W/(m ∙ K), and that of copper is 395 W/(m ∙ K). No heat is exchanged between the rods and the surroundings, except at their ends.

A 2-mol sample of oxygen gas expands slowly and adiabatically from a pressure of 5 atm and a volume of 12.0L to a final volume of 30.0L. Find the change of internal energy. 

Two liquids are mixed in an insulated container. The final temperature is below both initial temperatures. Best explanation:

A Carnot heat engine absorbs heat Q from a hot reservoir at 127oC and exhausts heat to a cold reservoir at 27oC. How much heat is exhausted to the cold reservoir?