[Right]-BICEP: Are the Results Right?

Our tests should first validate that the code produces the expected results. The arithmetic-mean test below demonstrates that the ScoreCollection class produces the correct mean of 6 given the numbers 5 and 7.

@Test
public void answersArithmeticMeanOfTwoNumbers() {
   ScoreCollection collection = new ScoreCollection();
   collection.add(() -> 5);
   collection.add(() -> 7);
   
   int actualResult =

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