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In light of the bias-variance tradeoff, which of the following reduces the bias error in supervised machine learning?

 Using a cutoff value of 0.4, how would this 2-NN classifier classify Ryan?

We apply logistic regression to predict whether a customer’s issue would be resolved using wait time (sec) as the only input variable. Below, the column “Predicted Probability” is logistic regression’s predicted probability of the issue being resolved for each customer: Ticket # Customer Name Type of Issue Wait Time (sec) Call Time (min) Resolved Predicted Probability 1 Jill Snow PC 10 20 1 0.25 2 Najwa Galton Printer 20 30 0 0.18 3 Jose Minard TV 5 30 0 0.3 4 Leela Feng PC 9 34 0 0.26 The next five questions are based on this logistic regression output.

If a new customer’s wait time is 7 seconds, will the above logistic regression with a cutoff value of 0.2 predict the customer’s issue as resolved?

If the GRE scores of a group of students follow a normal distribution with a mean of 150 and a standard deviation of 10. Ricardo earned a score of 160. What percentile of the distribution would his score roughly be?

If the lift ratio of an association rule is greater than 1, then which of the following statements must be true (select all that apply)?

 Consider the association rule {Elegant}->{Pianist} and its reversal {Pianist}->{Elegant}. Which of the following statements must be true (select all that apply)

Here is the result of the k-means clustering using call time only: Cluster 1: Jill and Najwa; Cluster 2: Jose and Leela. The next three questions are based on this clustering result.

Ellen DeGeneres has 79 Twitter followers. Barack Obama has 130.1 million Twitter followers. Taylor Swift has 89 million Twitter followers. Ellen DeGeneres has 96 million Instagram followers. Barack Obama has 35 million Instagram followers. Taylor Swift has 153 million Instagram followers. Based on both the number of Twitter followers and the number of Instagram followers, which pair is the most similar to each other (in terms of the Euclidean distance)?

What is this respiratory region called #20: