text: const lowZScore = require('./AlgorithmConstants.json').lowZScore;
  const highZScore = require('./AlgorithmConstants.json').highZScore;
  
  const computeNewDifficulty = (
      currentDifficulty,
      probabilitySum,
      correctAnswerSum,
      IIFsum
  ) => {
      let newDifficulty =
          currentDifficulty + (probabilitySum - correctAnswerSum) / IIFsum;
  
      return newDifficulty < lowZScore
          ? lowZScore
          : newDifficulty > highZScore
          ? highZScore
          : newDifficulty;
  };
  
  module.exports = {
      computeNewDifficulty,
  };
  