3. The following data represent the age of the mother at childbirth for 1980 and 2002. Number of Births Number ofBirths Age of Mother 1980 (thousands) 2002 (thousands) 10–14 1.1 0.7 15–19 53.0 43.0 20–24 115.1 103.6 25-29 112.9 113.6 30–34 61.9 91.5 35–39 19.8 41.4 40-44 3.9 8.3 45-49 0.2 0.5 Source. National Vital Statistics Reports, Vol. 52, No. 10 (a) Find the population mean and standard deviation of age for mothers in 1980. (b) Find the population mean and standard deviation of age for mothers in 2002. (c) Which year has the higher mean age? (d) Which year has more dispersion in age?

3. The following data represent the age of the mother at childbirth for 1980 and 2002. Number of Births Number ofBirths Age of Mother 1980 (thousands) 2002 (thousands) 10–14 1.1 0.7 15–19 53.0 43.0 20–24 115.1 103.6 25-29 112.9 113.6 30–34 61.9 91.5 35–39 19.8 41.4 40-44 3.9 8.3 45-49 0.2 0.5 Source. National Vital Statistics Reports, Vol. 52, No. 10 (a) Find the population mean and standard deviation of age for mothers in 1980. (b) Find the population mean and standard deviation of age for mothers in 2002. (c) Which year has the higher mean age? (d) Which year has more dispersion in age?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 11MCQ

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