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1. Which statistical test should a software engineering student use to test whether the average scores of two groups of students differs significantly? Answer: A software engineering student should use an independent t-test, which is a type of parametric test and determines if two populations have different means.

2. What is the Central Limit Theorem and how does it apply to software engineering? Answer: The Central Limit Theorem (CLT) states that the sampling distribution of the sample mean will be approximately normal, regardless of the distribution of the population from which the sample was drawn. In software engineering, this means that even if the underlying data is distributed non-normally, one can still perform valid statistical tests on the sample mean of the data.