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Quiz: Assignment 7 (Chapter 7) 147 161 175 180 201 211 231 The cholesterol levels of an adult can be described by a Normal model with a mean of 189 mg/dL and a standard deviation of 28. Complete parts a through e below. (Round to two decimal places as needed.) d) Estimate the interquartile range of cholesterol levels Question 6 of 6 b) What percent of adults do you expect to have cholesterol levels over 200 mg/dL? % (Round to two decimal places as needed.) c) What percent of adults do you expect to have cholesterol levels between 150 and 170 mg/dL? IOR= mg/dL (Round to the nearest integer as needed.) e) Above what value are the highest 15% of adults' cholesterol levels? mg/dL (Round to the nearest integer as needed.) 301-3² > This quiz: 32 point(s) poss This question: 11 point(s) 100 133 00 217 245 255