Mathematics > EXAM > Statistics Fundamentals Unit 5 Challenge 3 with Answers (All)
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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