According to an almanac, 60% of adult smokers started smoking before turning 18 years old. (a) If 300 adult smokers are randomly selected, how many would we expect to have started smoking before turning 18 years old? (b) Would it be unusual to observe 270 smokers who started smoking before turning 18 years old in a random sample of 300 adult smokers? Why? (a) We would expect about adult smokers to have started smoking before turning 18 years old. (Type a whole number.) (b) Would it be unusual to observe 270 smokers who started smoking before turning 18 years old in a random sample of 300 adult smokers? O A. No, because 270 is greater than u + 2o. B. No, because 270 is less than u - 20. O C. No, because 270 is between u - 20 and u + 20. D. Yes, because 270 is greater than u + 20. O E. Yes, because 270 is between u - 2o and u + 20. O O

According to an almanac, 60% of adult smokers started smoking before turning 18 years old. (a) If 300 adult smokers are randomly selected, how many would we expect to have started smoking before turning 18 years old? (b) Would it be unusual to observe 270 smokers who started smoking before turning 18 years old in a random sample of 300 adult smokers? Why? (a) We would expect about adult smokers to have started smoking before turning 18 years old. (Type a whole number.) (b) Would it be unusual to observe 270 smokers who started smoking before turning 18 years old in a random sample of 300 adult smokers? O A. No, because 270 is greater than u + 2o. B. No, because 270 is less than u - 20. O C. No, because 270 is between u - 20 and u + 20. D. Yes, because 270 is greater than u + 20. O E. Yes, because 270 is between u - 2o and u + 20. O O

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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