Chapter 2, Section 1, Exercise 019Antibiotics in Infancy and WeightA Canadian longitudinal study1 examines whether giving antibiotics in infancy increases the likelihood that the child will be overweight later in life. The children were classified as having received antibiotics or not during the first year of life and then being overweight or not at 9 years old. The study included 616 children, and the results are shown in the table below. OverweightNot OverweightTotalAntibiotics144294438No Antibiotics37141178Total181435616Round your answers to three decimal places.(a) What proportion of all children in the study were given antibiotics during the first year of life?(b) What proportion of all children in the study were classified as overweight at age 9?(c) What proportion of those receiving antibiotics were classified as overweight at age 9?(d) What proportion of those not receiving antibiotics were classified as overweight at age 9?(e) If we use PA^ to denote the proportion from part (c) and P^N to denote the proportion from part (d), calculate the difference in proportion being overweight, PA^-PN^, between those that were exposed to antibiotics and those that weren't.PA^-PN^=(f) What proportion of all children classified as overweight were given antibiotics during the first year of life?

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Description: Chapter 2, Section 1, Exercise 019Antibiotics in Infancy and WeightA Canadian longitudinal study1 examines whether giving antibiotics in infancy increases the likelihood that the child will be overweight later in life. The children were classified as

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

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ISBN:9780079039897

Author:Carter

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Chapter10: Statistics

Section10.6: Summarizing Categorical Data

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Chapter 2, Section 1, Exercise 019

Antibiotics in Infancy and Weight

A Canadian longitudinal study¹ examines whether giving antibiotics in infancy increases the likelihood that the child will be overweight later in life. The children were classified as having received antibiotics or not during the first year of life and then being overweight or not at 9 years old. The study included 616 children, and the results are shown in the table below.

	Overweight	Not Overweight	Total
Antibiotics	144	294	438
No Antibiotics	37	141	178
Total	181	435	616 Round your answers to three decimal places. (a) What proportion of all children in the study were given antibiotics during the first year of life? (b) What proportion of all children in the study were classified as overweight at age 9? (c) What proportion of those receiving antibiotics were classified as overweight at age 9? (d) What proportion of those not receiving antibiotics were classified as overweight at age 9? (e) If we use PA^ to denote the proportion from part (c) and P^N to denote the proportion from part (d), calculate the difference in proportion being overweight, PA^-PN^, between those that were exposed to antibiotics and those that weren't. PA^-PN^= (f) What proportion of all children classified as overweight were given antibiotics during the first year of life?

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