Problem 18
U.S. life expectancy has been steadily increasing (see Exercise 15 in Section 2.1 and data file for LIFEPXEC). The following graph shows the roughly linear trends for both males and females over more than three decades. a. According to these data, what is the life expectancy of a female born in 1970? Of a male born in 2005? b. Sketch a straight line to create a linear approximation of the data for your gender. Males and females will have different lines. c. Identify two points on your line and calculate the slope. What does your slope mean in this context? The male slope is steeper than the female slope. What does that imply? d. Generate a linear function for your line. (Hint: Let the independent variable be the number of years since 1970.) e. What would your model predict for your sexs life expectancy in 2010? How close does your model come to Census Bureau current predictions of life expectancies in 2010 of 75.6 years for males and 81.4 for females?

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Lecture 1: Statistics Info and some Basic Principles -‐ Statistics is the most important science in the whole world: for upon it depends the practical application of every other science and of every art: the one science essential to all political and social administration, all education, all organization based on experience, for it only gives results of our experience." Florence Nightingale, Statistician -‐ Statistics are numbers measured for some purpose. -‐ Statistics is

Explorations in College Algebra was written by and is associated to the ISBN: 9780470466445. This textbook survival guide was created for the textbook: Explorations in College Algebra, edition: 5. Since the solution to 18 from 2 chapter was answered, more than 233 students have viewed the full step-by-step answer. The answer to “U.S. life expectancy has been steadily increasing (see Exercise 15 in Section 2.1 and data file for LIFEPXEC). The following graph shows the roughly linear trends for both males and females over more than three decades. a. According to these data, what is the life expectancy of a female born in 1970? Of a male born in 2005? b. Sketch a straight line to create a linear approximation of the data for your gender. Males and females will have different lines. c. Identify two points on your line and calculate the slope. What does your slope mean in this context? The male slope is steeper than the female slope. What does that imply? d. Generate a linear function for your line. (Hint: Let the independent variable be the number of years since 1970.) e. What would your model predict for your sexs life expectancy in 2010? How close does your model come to Census Bureau current predictions of life expectancies in 2010 of 75.6 years for males and 81.4 for females?” is broken down into a number of easy to follow steps, and 171 words. This full solution covers the following key subjects: . This expansive textbook survival guide covers 9 chapters, and 1546 solutions. The full step-by-step solution to problem: 18 from chapter: 2 was answered by , our top Math solution expert on 12/23/17, 04:55PM.