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How to generate a normal distribution of 1000 data points with a set mean and variance in R, complete a statistical summary with explanation, and create a density plot, and then perform these steps in Python using the Codility editor?

Can you detail the differences between batch normalisation and instance normalisation?

How do supervised, unsupervised, and reinforcement learning models fundamentally differ from one another?

Create a fraud prevention platform for Roku.

Could you elaborate on the contrast between Ridge and Lasso?

How would you implement a simulation of a fair die roll using a random number generator and verify its accuracy?

Outline the key components of a system that can handle millions of ad bid requests per second.

Please describe your proposed approach to creating a system that detects anomalies in a user's server data and sends alerts to get the user's attention.

I'm interested in your experience using cross-validation to assess the effectiveness of a machine learning model.

Given an array of integers, how would you go about identifying the subarray of length k with the highest possible sum?