Intro Stats, Books a la Carte Edition (5th Edition)
5th Edition
ISBN: 9780134210285
Author: Richard D. De Veaux, Paul Velleman, David E. Bock
Publisher: PEARSON
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Question
Chapter R, Problem 2.37RE
To determine
Create a model and interpret.
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Discribe a specific time in real life where a population being surveyed is appropriate. What data are you trying to collect, and give reasons why surveying the population is appropriate.
1. Describe the situation
2. Support why surveying the population is appropriate, using details.
The bar graph shows the average cost of tuition and fees at private four-year colleges in a particular country. Below are two mathematical models for the data shown in the graph. In
each formula, T represents the average cost of tuition and fees at private colleges for the school year ending x years after 2000. Answer parts a and b.
Average Cost of Tuition and Fees at Private Four-Year
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22
20-
22,051
21,057
20,095
19,128
18,135
18-
16.203
16 15 218
17,168
Model 1 T= 974x+ 15,223
Model 2
T= - 2.1x + 988x + 15,208
14
2000 2001 20022003 2004 2005 2006 2007
a. Use each model to find the average cost of tuition and fees at private colleges for the school vear ending in 2003. By how much does each model underestimate or overestimate the actual cost shown for the school year ending
in 2003?
HIHE
The average cost given by model 1 is $ Round to the nearest dollar.)
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The table below shows a recent graduate's
credit card balance each month after
graduation.
Month
1
2
3
Debt ($)
620.00
761.88
899.80
a) Look at the graph on your calculator. Based
on this graph, what type of equation should
represent this situation? Explain your answer.
b) Use your calculator to find the equation that
you feel best fits this data. What is the
equation?
c) Based on this equation, what is the
predicted amount of debt for month 9 after
graduation?
Chapter R Solutions
Intro Stats, Books a la Carte Edition (5th Edition)
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R - Prob. 5.40RECh. R - Prob. 5.41RECh. R - Prob. 5.42RECh. R - Prob. 5.43RECh. R - Prob. 5.44RECh. R - Prob. 5.45RECh. R - Learning math Developers of a new math curriculum...Ch. R - Prob. 5.47RECh. R - Dairy sales Peninsula Creameries sells both...Ch. R - Diet Thirteen overweight women volunteered for a...Ch. R - Cramming Students in two basic Spanish classes...Ch. R - Prob. 5.51RECh. R - Newspapers Who reads the newspaper more, men or...
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