Statistics Fundamentals Unit 5 Challenge 3 with Answers

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Statistics Fundamentals Unit 5 Challenge 3 with Answers.The cholesterol level of children is normally distributed. If the average cholesterol level is 194 with a standard deviation of 15, what perce... ntage of children have a cholesterol level lower than 199? Answers are rounded to the nearest whole percent.  a.) 26%  b.) 74%  c.) 63%  d.) 37%  c.)Correct. Recall to find the probability, we need to convert to a z-score and then go to standard normal chart. We can note: Looking at a z-table, a z-score of 0.33 corresponds with a percentage of 0.6293 or about 0.63 = 63%. [Show More]

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