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Get Full Access to Stats: Data And Models - 4 Edition - Chapter 5 - Problem 35re
Get Full Access to Stats: Data And Models - 4 Edition - Chapter 5 - Problem 35re

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# Age and party 2011 II Consider again the Pew Research ISBN: 9780321986498 70

## Solution for problem 35RE Chapter 5

Stats: Data and Models | 4th Edition

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Problem 35RE

Problem 35RE

Age and party 2011 II Consider again the Pew Research Center results on age and political party in Exercise.

a) What is the marginal distribution of party affiliation?

b) Create segmented bar graphs displaying the conditional distribution of party affiliation for each age group.

c) Summarize these poll results in a few sentences that might appear in a newspaper article about party affiliation in the United States.

d) Do you think party affiliation is independent of the voter’s age? Explain.

Exercise

Age and party 2011 The Pew Research Center conducts surveys regularly asking respondents which political party they identify with or lean toward. Among their results is the following table relating preferred political party and age. (http://people-press.org/)

 Party Republican/Lean Rep. Democrat/Lean Dem. Neither Total Age 18–29 318 424 73 815 30–49 991 1058 203 2252 50–64 1260 1407 264 2931 65+ 1136 1087 193 2416 Total 3705 3976 733 8414

a) What percent of people surveyed were Republicans or leaned Republican?

b) Do you think this might be a reasonable estimate of the percentage of all voters who are Republicans or lean Republicans? Explain.

c) What percent of people surveyed were under 30 or over 65?

d) What percent of people were classified as “Neither” and under the age of 30?

e) What percent of the people classified as “Neither” were under 30?

f) What percent of people under 30 were classified as “Neither”?

Step-by-Step Solution:
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Calculus I Chapters 1.1 and 1.2 Chapter 1.1 – An Introduction to Calculus  Formulas to remember 2 2 o ( − + = − o ( + )2 = + 2 + 2 2 2 2 o ( − ) = − 2 − −± −4 o = 2 1.1 Preview of Calculus  Calculus is the mathematics of change Pre-Cal Cal Δ Slope = Δ Area Of rectangle = ℎ 2) the Tangent Line Problem Finding a tangent line to a curve @ point P is equivalent to finding the slope of the tangent line at P. - We will use the secant line: a line through the point P of the tangent and a point Q also on the curve. ( ) 2 For = = 1 = 1 2 1.1 = 1.1 = 1.21 1(1.1, 1.1 ) = 1.1,1.21 ) (1.5 , 1.5 ) = (1.5,2.25) 2 3(1.01, 1.01 ) = 1.01,1.0201 ) (1.001, 1.001 ) = 1.001,1.002 ) 4 Slope of P, Q + ∆ − ) + ∆ − ) = = ( + ∆ − ∆ = 1 ∆ = 1 − 1.1 = 0.1 1 + 0.1 − 1) 1 = 0.1 1.1 − 1) 1.21 − 1 0.21 = = = = 2.1 1 0.1 0.1 0.1 1.01 − 1 ) 3 = 0.01 1.0201 − 1 0.0201 3 = 0.01 = 0.01 = 2.01 1.001 − 1 ) 4 = 0.001 1.002 − 1 0.002 4 = = = 2 0.001 0.001 2 = − 1 : = 1 − 1 0 = 1, 1 = , −1 = 1 = , = 2 + 1 ( ) = 2 + 1 )2= 4 + 4 + 4 ( ) = 2 + 1 Chapter 1.2 Finding Limits Graphically and Numerically 1) The informal definition of a limit a. b. ℎ c. If () becomes extremely close to the number and approaches from either side, then we say: ℎ ,ℎ . And we write graphically → = Ex: = −2 = −2 = 1 = 2 −4 (+2)(−2) +2 1 lim = →2 4 lim = →−2 Numerically: 1.9 1.99 1.999 2 2.001 2.01 2.1 () 0.256 0.251 0.250 0.25 0.2499 0.2494 0.2439 2) Learning and using the formal definition of a limit → = This means that for each > 0, there exists a > 0 If 0 < − < , then | − | < and are positive numbers 0 < − < either is in the interval ( − , + ) or is in ( − , or ( + ,) Ex: using the term and definition = + 2 = 4 Lim + 2 = 6 →4 Find that satisfies: 0 < − < implies − < ( ) | | − 6 = + 2 − = | − 4|| If we want − 4 < 3, must choose ) 3) Learn different ways that a limit can fail to exist I) Behavior that differs from the left and the right Y-Values 2.5 2 1.5 1 0.5 0 -3 -2 -1 0 1 2 3 4 5 -0.5 -1 -1.5 -2 -2.5 II) Unbounded behavior III) Oscillating behavior = sin( )1 1 lim sin( ) = →0

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##### ISBN: 9780321986498

This textbook survival guide was created for the textbook: Stats: Data and Models , edition: 4. The answer to “Age and party 2011 II Consider again the Pew Research Center results on age and political party in Exercise.a) What is the marginal distribution of party affiliation?________________b) Create segmented bar graphs displaying the conditional distribution of party affiliation for each age group.________________c) Summarize these poll results in a few sentences that might appear in a newspaper article about party affiliation in the United States.________________d) Do you think party affiliation is independent of the voter’s age? Explain.ExerciseAge and party 2011 The Pew Research Center conducts surveys regularly asking respondents which political party they identify with or lean toward. Among their results is the following table relating preferred political party and age. (http://people-press.org/)Party Republican/Lean Rep.Democrat/Lean Dem.NeitherTotalAge18–293184247381530–499911058203225250–6412601407264293165+113610871932416Total370539767338414a) What percent of people surveyed were Republicans or leaned Republican?________________b) Do you think this might be a reasonable estimate of the percentage of all voters who are Republicans or lean Republicans? Explain.________________c) What percent of people surveyed were under 30 or over 65?________________d) What percent of people were classified as “Neither” and under the age of 30?________________e) What percent of the people classified as “Neither” were under 30?________________f) What percent of people under 30 were classified as “Neither”?” is broken down into a number of easy to follow steps, and 192 words. Since the solution to 35RE from 5 chapter was answered, more than 291 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 35RE from chapter: 5 was answered by , our top Statistics solution expert on 08/30/17, 07:04AM. This full solution covers the following key subjects: party, age, people, were, lean. This expansive textbook survival guide covers 12 chapters, and 679 solutions. Stats: Data and Models was written by and is associated to the ISBN: 9780321986498.

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