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Station 6a: A 1 year old male intact Newfoundland dog presents for a routine castration. No abnormalities noted on patient history, and no known allergies. Food was withheld per doctor instructions.  PE is WNL. You run routine bloodwork and you get the microhematocrit tube at your station.  All other bloodwork was WNL. What are the PCV results in %?

You’re building a decision tree using the Gini impurity criterion. A parent node contains 100 samples: 50 belong to class A, and 50 to class B. You are considering a binary split on a feature, resulting in the following two child nodes: Left Child: 40 samples — 40 of class A, 0 of class B Right Child: 60 samples — 10 of class A, 50 of class B What is the reduction in Gini impurity (Δ impurity) due to this split?

Suppose you want to modify a binary classifier to increase sensitivity, even if it means decreasing precision. Which of the following changes is most likely to achieve this?

Case Description 2: Consider the Bi-criteria LP (BCLP) problem.   Max z1 = -x1 + x2 Max z2 = x1   subject to:              -x1 + x2  ≤  2                               x1 ≤  7                               x1 + x2 ≤  8                               x1, x2 ³ 0                                       The decision space for the above set of equations is shown Figure below. The labels associated with the corner points of the decision spaces are as follows:   A (7, 0) B (7, 1) C (3, 5) D (0, 2) E (0, 0)   Figure 1: Decision Space The objective space for the above set of equations is shown Figure below. The labels associated with the corner points of the objective spaces are as follows:   A (-7, 7) B (-6, 7) C (2, 3) D (2, 0) E (0, 0)   Figure 2: Objective Space Answer questions 15 through 18 using the information provided in Case Description 2

19.  What is the ideal value?

32.  For the R-chart, LCL will be ______

31.  For the R-chart, the UCL will be _____

Case Description 5 Jane invests a lumpsum in an ETF that tracks Russell 2000 Index for five years. The annual returns, net of fees and other expenses, for this ETF are: Profit of 18.37% in Year 1, Loss of 1.57% in Year 2, Loss of 33.79% in Year 3, Profit of 27.17% in Year 4, and Profit of 26.85% in Year 5.   Answer questions 22 through 23 using the information provided in Case Description 5.

17.  What is the ideal solution?

18.  What is the best lower and upper bounds for z1 and z2?