Business Analytics
3rd Edition
ISBN: 9780135231715
Author: Evans
Publisher: PEARSON
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Chapter 1, Problem 11PE
In this chapter, we noted the importance of defining and analyzing a problem prior to attempting to find a solution. Consider this example: One of the earliest operations research groups during World War II was conducting a study on the optimum utilization of Spitfire and Hurricane aircraft during the Battle of Britain. Whenever one of these planes returned from battle, the locations of the bullet holes on it were carefully plotted. By repeatedly recording these data over time, and studying the clusters of data, the group was able to estimate the regions of the aircraft most likely to be hit by enemy gunfire, with the objective of reinforcing these regions with special armor. What difficulties do you see here?
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Unit 5 Lab
Background: Between the years of 1997 and 2003, the World Health Organization collected data on head circumference, arm circumference, and other body measurements for 8440 children from Brazil, Ghana, India, Norway, Oman and the USA. All of the children were healthy and breastfed by mothers who did not smoke. Children in the sample lived in socioeconomic conditions favorable to normal physical growth. Variables such as parental education level and income level were used to exclude children whose growth was “environmentally constrained”; however, low-weight full term babies were included if their mothers met socioeconomic and nutritional criteria. In short, the study design attempted to include healthy children from a wide range of ethnic and cultural groups whose home environments reasonably assured the conditions for healthy physical growth.
This data was used to produce growth charts that are part of every pediatrician’s toolkit for monitoring a child’s overall…
The sales manager of a large automotive parts distributor wants to estimate the total annual sales for each of the company’s regions. Three factors appear to be related to regional sales: the number of retail outlets in the region, the total personal income of the region, and the number of cars registered in the region. The following table shows the data for 10 regions that were gathered for last year sales.
The excel data file for this problem is:final exam question 6B spring 2021.xlsx
Region
Annual sales ($ million)
Number of retail outlets
Number of automobiles registered (million)
Personal income ($ billion)
1
37.702
1,739
9.27
85.4
2
24.196
1,221
5.86
60.7
3
32.055
1,846
8.81
68.1
4
3.611
120
4.81
20.1
5
17.625
1,096
10.31
33.8
6
45.919
2,290
11.62
95.1
7
29.600
1,687
8.96
69.3
8
8.114
241
6.28
16.5
9
20.116
649
7.77
34.9
10
12.994
1,427
10.92…
Question 1
Stopping Distances
In a study on speed control, it was found that the main reasons for regulations were to make traffic flow more efficient and to minimize the risk of danger. An area that was focused on in the study was the distance required to completely stop a vehicle at various speeds. Use the following tables to answer the questions.
MPH
BRAKING DISTANCES (FEET)
20
20
30
45
40
81
50
133
60
205
80
411
Assume MPH is going to be used to predict stopping distance.
Develop the regression equation for the sample.
Can braking distance be accurately predicted from MPH?
Estimate the breaking distance if a motor vehicle is travelling at 35 MPH and 76 MPH.
Chapter 1 Solutions
Business Analytics
Ch. 1 - Discuss how you might use business analytics in...Ch. 1 - How might analytics be used in the following...Ch. 1 - A supermarket has been experiencing long lines...Ch. 1 - For each of the following scenarios, state whether...Ch. 1 - Suppose that a manufacturer can produce a part for...Ch. 1 - A bank developed a model for predicting the...Ch. 1 - Four key marketing decision options are price P,...Ch. 1 - Total marketing effort is a term used to describe...Ch. 1 - A manufacturer of headphones is preparing to set...Ch. 1 - In this chapter, we noted the importance of...
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