Elementary Statistics
12th Edition
ISBN: 9780321837936
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 14.2, Problem 9BSC
To determine
To obtain: The values of
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2.62 For the period 2001–2008, the Bristol-Myers Squibb Company, Inc. reported the following amounts (in billions of dollars) for (1) net sales and (2) advertising and product promotion. The data are also in the file XR02062.
Source: Bristol-Myers Squibb Company, Annual Reports, 2005, 2008.
Year Net Sales Advertising/Promotion
2001 $16.612 $1.201
2002 16.208 1.143
2003 18.653 1.416
2004 19.380 1.411
2005 19.207 1.476
2006 16.208 1.304
2007 18.193 1.415
2008 20.597 1.550
For these data, construct a line graph that shows both net sales and expenditures for advertising/product promotion over time. Some would suggest that increases in advertising should be accompanied by increases in sales. Does your line graph support this?
The file P02_26.xlsx lists sales (in millions of dollars) of Dell Computer during the period 1987–1997 (where year 1 corresponds to 1987).
Year
Sales
1
69
2
159
3
258
4
389
5
546
6
890
7
2014
8
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9
3475
10
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11
7759
a. Fit a power and an exponential trend curve to these data. Which fits the data better?
b. Use your part a answer to predict 1999 sales for Dell.
c. Use your part a answer to describe how the sales of Dell have grown from year to year.
The following table shows the average monthly distance traveled (in billion miles) by vehicles on urban highways for five
different years.
Urban Highways - Average Monthly Distance Traveled by Vehicles (Billion Miles)
Years Jan
Year 1 4.22
Year 2 4.31
Year 3 4.38
Year 4 4.45
Year 5 4.51
Feb
Mar Apr May Jun
July Aug Sep
Oct
Nov
Dec
5.32
5.21
5.12
4.92
4.49
4.55
4.49
4.44| 4.39
4.37 4.35
4.68 | 4.74 | 4.79
4.88
4.92
5.44
5.34
5.24
4.98
4.59
4.68
4.65
4.61
5.51
5.36
4.63
4.85 4.89
4.98
5.01
5.41
4.71
4.78
4.82
5.59
5.5
5.41
4.72
4.78
4.79
4.82
5.06
5.11
5.65
5.62
5.49
5.12
4.8
4.88
4.82
4.95
5.12
5.22 5.44
a. Construct a time series plot. What type of pattern exists in the data?
b. Use a multiple regression model to develop an equation to account for seasonal effects and any linear trend in the data.
To capture seasonal effects, use the dummy variables Jan = 1 if month is January, 0 otherwise; Feb = 1 if month is
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Chapter 14 Solutions
Elementary Statistics
Ch. 14.2 - Product Specs Table 14-1 lists process data...Ch. 14.2 - Prob. 2BSCCh. 14.2 - Prob. 3BSCCh. 14.2 - Prob. 4BSCCh. 14.2 - Prob. 5BSCCh. 14.2 - Prob. 6BSCCh. 14.2 - Prob. 7BSCCh. 14.2 - Prob. 8BSCCh. 14.2 - Prob. 9BSCCh. 14.2 - Prob. 10BSC
Ch. 14.2 - Prob. 11BSCCh. 14.2 - Prob. 12BSCCh. 14.2 - Prob. 13BBCh. 14.2 - Prob. 14BBCh. 14.3 - Prob. 1BSCCh. 14.3 - Prob. 2BSCCh. 14.3 - Prob. 3BSCCh. 14.3 - Interpreting a Control Chart After constructing a...Ch. 14.3 - Prob. 5BSCCh. 14.3 - Prob. 6BSCCh. 14.3 - Prob. 7BSCCh. 14.3 - Prob. 8BSCCh. 14.3 - Prob. 9BSCCh. 14.3 - Prob. 10BSCCh. 14.3 - Control Charts for p. In Exercises 512, use the...Ch. 14.3 - Prob. 12BSCCh. 14.3 - Prob. 13BBCh. 14 - Prob. 1CQQCh. 14 - Prob. 2CQQCh. 14 - Prob. 3CQQCh. 14 - Prob. 4CQQCh. 14 - Prob. 5CQQCh. 14 - Prob. 6CQQCh. 14 - Prob. 7CQQCh. 14 - Prob. 8CQQCh. 14 - Prob. 9CQQCh. 14 - Examine the following p chart for defective...Ch. 14 - Prob. 1RECh. 14 - Prob. 2RECh. 14 - Prob. 3RECh. 14 - Energy Consumption. Exercises 15 refer to the...Ch. 14 - Prob. 5RECh. 14 - Prob. 1CRECh. 14 - Prob. 2CRECh. 14 - Prob. 3CRECh. 14 - Prob. 4CRECh. 14 - Prob. 5CRECh. 14 - Prob. 6CRECh. 14 - Prob. 7CRECh. 14 - Prob. 8CRECh. 14 - Prob. 9CRECh. 14 - Prob. 10CRECh. 14 - FROM DATA TO DECISION Critical Thinking: Are the...
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