EBK BUSINESS ANALYTICS
3rd Edition
ISBN: 9780135231906
Author: Evans
Publisher: VST
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Chapter 4, Problem 42PE
To determine
To develop a spreadsheet to estimate the sample
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Consider the time series X₁ and Y₁ = (I – B)² (I – B³)Xt. What transformations were
performed on Xt to obtain Yt?
seasonal difference of order 2
simple difference of order 5
seasonal difference of order 1
seasonal difference of order 5
simple difference of order 2
Calculate the 90% confidence interval for the population mean difference using the data in the attached image. I need to see where I went wrong.
Microsoft Excel snapshot for random sampling: Also note the formula used for the last
column
02
x✓ fx =INDEX(5852:58551, RANK(C2, $C$2:$C$51))
A
B
1
No.
States
2
1
ALABAMA
Rand No.
0.925957526
3
2
ALASKA
0.372999976
4
3
ARIZONA
0.941323044
5
4 ARKANSAS
0.071266381
Random Sample
CALIFORNIA
NORTH CAROLINA
ARKANSAS
WASHINGTON
G7
Microsoft Excel snapshot for systematic sampling:
xfx INDEX(SD52:50551, F7)
A
B
E
F
G
1
No.
States
Rand No. Random Sample
population
50
2
1 ALABAMA
0.5296685 NEW HAMPSHIRE
sample
10
3
2 ALASKA
0.4493186 OKLAHOMA
k
5
4
3 ARIZONA
0.707914 KANSAS
5
4 ARKANSAS 0.4831379 NORTH DAKOTA
6
5 CALIFORNIA 0.7277162 INDIANA
Random Sample
Sample Name
7
6 COLORADO 0.5865002 MISSISSIPPI
8
7:ONNECTICU 0.7640596 ILLINOIS
9
8 DELAWARE 0.5783029 MISSOURI
525
10
15
INDIANA
MARYLAND
COLORADO
Chapter 4 Solutions
EBK BUSINESS ANALYTICS
Ch. 4 - Prob. 1PECh. 4 - Classify each of the data elements in the Sales...Ch. 4 - Identify each of the variables in the Excel file...Ch. 4 - Classify each of the variables in the Excel file...Ch. 4 - Use the COUNTIF function to construct a frequency...Ch. 4 - A community health status survey obtained the...Ch. 4 - Construct frequency distributions and histograms...Ch. 4 - Use the Histogram tool to develop a frequency...Ch. 4 - Prob. 12PECh. 4 - Use a PivotTable to construct a frequency...
Ch. 4 - Prob. 14PECh. 4 - Find the 20thand80th percentiles of home prices in...Ch. 4 - Find the 10thand90th percentiles and the first and...Ch. 4 - Prob. 18PECh. 4 - Find the first, second, and third quartiles for...Ch. 4 - Prob. 20PECh. 4 - Prob. 21PECh. 4 - Find the mean, median, and midrange for the data...Ch. 4 - In the Excel file Facebook Survey, find the mean,...Ch. 4 - Considering the data in the Excel file Home Market...Ch. 4 - Considering the data in the Excel file Home Market...Ch. 4 - In the Excel file Facebook Survey, find the range,...Ch. 4 - For the Excel file Tablet Computer Sales, find the...Ch. 4 - The Excel file Atlanta Airline Data provides...Ch. 4 - Compute the coefficient of variation for each...Ch. 4 - Find 30 days of stock prices for three companies...Ch. 4 - Apply the Descriptive Statistics tool for subsets...Ch. 4 - Use the Descriptive Statistics tool to summarize...Ch. 4 - Prob. 39PECh. 4 - Prob. 42PECh. 4 - Prob. 43PECh. 4 - Prob. 44PECh. 4 - Prob. 45PECh. 4 - In the Excel file Bicycle Inventory, find the...Ch. 4 - Prob. 48PECh. 4 - Prob. 49PECh. 4 - Prob. 50PECh. 4 - Prob. 51PECh. 4 - Prob. 52PECh. 4 - Prob. 55PECh. 4 - Prob. 56PECh. 4 - Prob. 57PECh. 4 - Prob. 58PECh. 4 - Prob. 59PECh. 4 - In the Excel file Weddings, determine the...Ch. 4 - Prob. 61PECh. 4 - Prob. 62PECh. 4 - For the Presidents Inn Guest Database, find the...Ch. 4 - For the Excel file Credit Risk Data, compute the...Ch. 4 - Compute the z-scores for the data in the Excel...Ch. 4 - Prob. 67PECh. 4 - Prob. 68PECh. 4 - Prob. 70PECh. 4 - Prob. 71PECh. 4 - Prob. 73PECh. 4 - Prob. 74PECh. 4 - Prob. 75PE
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