EP BASIC BUS.STATS-ACCESS (18 WEEKS)
14th Edition
ISBN: 9780135989005
Author: BERENSON
Publisher: PEARSON CO
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Textbook Question
Chapter 18, Problem 15CRP
The file HybridSales contains the number of domestic and imported hybrid vehicles sold in the United States from 1999 to 2016.
You want to be able to predict the number of domestic and imported hybrid vehicles sold in the United States in 2017 and 2018. Completely analyze the data.
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MarkLines is an online portal (www.marklines.com) that reports automotive industry data. The table below shows the number of cars sold in the United States from January to November in 2017 and 2018. The top 22 manufacturers, plus others, are listed here. Sales data often is reported in this way to compare current sales to last year’s sales.
Car Sales
Manufacturer
Jan.-Nov.2017
Jan.-Nov.2018
GM (Est.)
2,691,493
2,654,568
Ford
2,334,290
2,265,590
Toyota
2,211,533
2,205,762
Fiat Chrysler
1,887,430
2,038,684
Honda
1,492,112
1,449,713
Nissan
1,455,238
1,345,157
Hyundai
621,961
612,225
Subaru
584,614
615,594
Kia
546,629
542,245
Mercedes (includes Sprinter)
332,990
318,012
BMW
271,432
276,657
VW
309,395
322,017
Mazda
262,577
274,455
Audi
199,534
200,558
Tesla (Est.)
40,320
106,050
Land Rover
66,759
81,526
Volvo
71828
89437
Mitsubishi
95,185
109,088
Porsche
51,507
53,116
MINI
42,494
40,887
Jaguar
36,180
27,021
Others
18,901
17,251
smart…
the data file is just a blank excel sheet, you do not need to see it to access information.
The Toyota Camry is one of the best-selling cars in North America. The cost of a previously owned Camry depends on many factors, including the
model year, mileage, and condition. To investigate the relationship between the car's mileage and the sales price for Camrys, the following data
show the mileage and sale price for 19 sales (PriceHub web site, February 24, 2012).
DATA file
Miles (1,000s)
Price ($1,000s)
22
16.2
29
16.0
36
13.8
47
11.5
63
12.5
77
12.9
73
11.2
87
13.0
92
11.8
101
10.8
110
8.3
28
12.5
59
11.1
68
15.0
68
12.2
91
13.0
42
15.6
65
12.7
110
8.3
Chapter 18 Solutions
EP BASIC BUS.STATS-ACCESS (18 WEEKS)
Ch. 18 - In many manufacturing processes, the term...Ch. 18 - Many factors determine the attendance at Major...Ch. 18 - Prob. 3CRPCh. 18 - Prob. 4CRPCh. 18 - Prob. 5CRPCh. 18 - The file Euro Tourism 2 contains a sample of 28...Ch. 18 - The file Philly contains a sample of 25...Ch. 18 - Prob. 8CRPCh. 18 - The file UsedCars contains attributes of cars that...Ch. 18 - A study was conducted to determine whether any...
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- A high school guidance counselor analyzed data from a sample of 200 community colleges throughout the United States. One of his goals was to estimate the annual tuition costs of community colleges in the United States. Describe the population and variable of interest to the guidance counselor. Why?arrow_forwardThe data represent the cost, return on investment, and graduation rate for a random sample of fifty colleges or universities in the United States. The data is from payscale.com. The variable "Cost" represents the four-year cost including tuition, supplies, room and board of attending the school. The variable "Annual ROI" represents the return on investment for graduates of the school. It essentially represents how much you would earn on the investment of attending the school. The variable "Grad Rate" represents the graduation rate of the school. Complete parts (a) and (b) below. Click here to view the school data. Click here to view the table of critical values of the correlation coefficient. (a) Describe the association between Cost and Graduation Rate graphically by drawing a scatter diagram, treating Cost as the explanatory variable. Describe the association between Cost and Graduation Rate by finding the linear correlation between the two variables. Is there a linear association…arrow_forwardwe can conclude from correlation calculation that one variable caused the other variable. True or False.arrow_forward
- TV Viewing Times. Data from a sample of Americans yielded the following estimates of average TV viewing time per month for all Americans 2 years old and older. The times are in hours and minutes; Q1 stands for first quarter. [SOURCE: The Cross-Platform Report, Quarter 1, 2011. Published by The Nielsen Company, _c 2011.]arrow_forwardQ5. Briefly explain four factors often used to subdivide life in mortality statistics.arrow_forwardMeasuring the height of a California redwood tree is very difficult because these trees grow to heights of over 300 feet. People familiar with these trees understand that the height of a California redwood tree is related to other characteristics of the tree, including the diameter of the tree at the breast height of a person. The data in the table represent the height (in feet) and diameter (in inches) at the breast height of a person for a sample of 21 California redwood trees. Interpret the meaning of the coefficient of determination in this problem. Perform a residual analysis on the results and determine the adequacy of the model. Determine whether there is a significant relationship between the height of redwood trees and the breast height diameter at the 0.05 level of significance. Height Diameter at breast height Bark thickness 122.0 20 1.1 193.5 36 2.8 166.5 18 2.0 82.0 10 1.2 133.5 21 2.0 156.0 29 1.4 172.5 51 1.8 81.0 11 1.1 148.0 26 2.5 113.0 12 1.5…arrow_forward
- The Environmental Protection Agency (EPA) uses a measure called the Pollutant Standards Index (PSI) to measure air quality in a city. A PSI reading over 100 indicates a day when the air quality is considered unhealthy. The measurements represent the number of days in 1995 that the PSI was over 100 for twenty metropolitan areas in the U.S. Midwest. 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 3, 4, 4, 4, 4, 5, 7, 7, 11, 14 Which of the above is the appropriate boxplot for this data?AB C When we drew the boxplot for this data we found no extreme outliers:truefalsearrow_forwardA statistics professor administered an exam to three different classes. The 8:00 class had 20 students and an average score of 82.4. The 9:00 class had 24 students and an average of 78.9. The 29 students in the 10:00 class had an average of 87.3. Calculate the overall average for all three classes combined.arrow_forward
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