STATISTICAL TECH IN BUSN CONNECT <LCPO>
18th Edition
ISBN: 9781266505942
Author: Lind
Publisher: MCG
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Chapter 17, Problem 53CE
To determine
Find the index of economic activity for each of the 3 months using January as the base period.
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The New York Times reported that Apple has unveiled a new iPad marketed specifically to school districts for use by students (The New York Times website). The -inch iPads will have faster processors and a cheaper price point in an effort to take market share away from Google Chromebooks in public school districts. Suppose that the following data represent the percentages of students currently using Apple iPads for a sample of U.S. public school districts.
Click on the datafile logo to reference the data.
15
22
12
21
26
18
42
29
64
20
15
22
18
24
27
24
26
19
a. Compute the mean and median percentage of students currently using Apple iPads.
Mean
(to decimals)
Median
(to the nearest whole number)
b. Compute the first and third quartiles for these data.
First quartile
(to decimals)
Third quartile
(to decimals)
c. Compute the range and interquartile range for these data.
Range
(to the nearest whole number)
Interquartile range
(to decimals)
d.…
United Dairies, Inc., supplies milk to several independent grocers throughout Dade County, Florida. Managers at United Dairies want to develop a forecast of the number of half-gallons of milk sold per week. Sales data for the past 12 weeks follow and have been transferred in the data file UDFMilk.xlsx download(also posted under week 11 module).
Week
Sales
Week
Sales
1
2750
7
3300
2
3100
8
3100
3
3250
9
2950
4
2800
10
3000
5
2900
11
3200
6
3050
12
3150
By Thursday, April 15 (11:55pm PST), answer the following 2 questions and attach a word doc or excel file to show your work.
Use the data in the file UDFMilk.xlsx downloadto construct a time series plot. What type of pattern exists in the data?
Use exponential smoothing with to develop a forecast of demand for week 13.
Is it possible to predict the annual number of business bankruptcies by the number of
firm births (business starts) in the United States? The following data published by the
U.S. Small Business Administration, Office of Advocacy, are pairs of the number of
business bankruptcies (1,000s) and the number of firm births (10,000s) for a six-year
period.
Business Bankruptcies
(1,000)
34.3
Firm Births
(10,000)
58.1
35.0
55.4
38.5
57.0
40.1
58.5
35.5
57.4
37.9
58.0
i) Based on the output given, use these data to develop the equation of the
regression model to predict the number of business bankruptcies by the
number of firm births.
ii) Explain the values of r and r.
iii) Predict the number of business bankruptcies if the number of firm births is
54.0 (10,000s).
iv) Do the data support the existence of a linear relationship between the number
of firm births and the number of business bankruptcies? Test using a = 0.05.
OUTPUT
Model Summary
Std. Error of the
Estimate
Adusted R
Model
R
R Square…
Chapter 17 Solutions
STATISTICAL TECH IN BUSN CONNECT <LCPO>
Ch. 17 - Prob. 1.1SRCh. 17 - Prob. 1.2SRCh. 17 - Prob. 1ECh. 17 - Prob. 2ECh. 17 - Prob. 3ECh. 17 - Prob. 4ECh. 17 - Prob. 2SRCh. 17 - Prob. 5ECh. 17 - Prob. 6ECh. 17 - Prob. 7E
Ch. 17 - Prob. 8ECh. 17 - Prob. 3SRCh. 17 - Prob. 9ECh. 17 - Prob. 10ECh. 17 - Prob. 4SRCh. 17 - Prob. 11ECh. 17 - Prob. 5SRCh. 17 - Prob. 6SRCh. 17 - Prob. 7SRCh. 17 - Prob. 13ECh. 17 - Prob. 14ECh. 17 - Prob. 15ECh. 17 - Prob. 16ECh. 17 - Prob. 17CECh. 17 - Prob. 18CECh. 17 - Prob. 19CECh. 17 - Prob. 20CECh. 17 - Prob. 21CECh. 17 - Prob. 22CECh. 17 - Prob. 23CECh. 17 - Prob. 24CECh. 17 - Prob. 25CECh. 17 - Prob. 26CECh. 17 - Prob. 27CECh. 17 - Prob. 28CECh. 17 - Prob. 29CECh. 17 - Prob. 30CECh. 17 - Prob. 31CECh. 17 - Prob. 32CECh. 17 - Prob. 33CECh. 17 - Prob. 34CECh. 17 - Prob. 35CECh. 17 - Prob. 36CECh. 17 - Prob. 37CECh. 17 - Prob. 38CECh. 17 - Prob. 39CECh. 17 - Prob. 40CECh. 17 - Prob. 41CECh. 17 - Prob. 42CECh. 17 - Prob. 43CECh. 17 - Prob. 44CECh. 17 - Prob. 45CECh. 17 - Prob. 46CECh. 17 - Prob. 47CECh. 17 - Prob. 48CECh. 17 - Prob. 49CECh. 17 - Prob. 50CECh. 17 - Prob. 51CECh. 17 - Prob. 52CECh. 17 - Prob. 53CECh. 17 - Prob. 54CECh. 17 - Prob. 55CE
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