Essentials of Business Analytics (MindTap Course List)
2nd Edition
ISBN: 9781305627734
Author: Jeffrey D. Camm, James J. Cochran, Michael J. Fry, Jeffrey W. Ohlmann, David R. Anderson
Publisher: Cengage Learning
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Chapter 11, Problem 12P
The Atlantic Seafood Company (ASC) is a buyer and distributor of seafood products that are sold to restaurants and specialty seafood outlets throughout the Northeast. ASC has a frozen storage facility in New York City that serves as the primary distribution point for all products. One of the ASC products is frozen large black tiger shrimp, which are sized at 16 to 20 pieces per pound. Each Saturday, ASC can purchase more tiger shrimp or sell the tiger shrimp at the existing New York City warehouse market price. ASC’s goal is to buy tiger shrimp at a low weekly price and sell it later at a higher price. ASC currently has 20,000 pounds of tiger shrimp in storage. Space is available to store a maximum of 100,000 pounds of tiger shrimp each week. In addition, ASC developed the following estimates of tiger shrimp prices for the next four weeks:
ASC would like to determine the optimal buying/storing/selling strategy for the next four weeks. The cost to store a pound of shrimp for one week is $0.15, and to account for unforeseen changes in supply or demand, management also indicated that 25,000 pounds of tiger shrimp must be in storage at the end of week 4. Determine the optimal buying/storing/selling strategy for ASC. What is the projected four-week profit? (Hint: Define variables for buying, selling, and inventory held in each week. Then use a constraint to define the relationship between these: inventory from end of previous period + bought this period – sold this period = inventory at end of this period. This type of constraint is referred to as an inventory balance constraint.)
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Example 4 (Part 2) We can use Statkey to take 50 different random samples of size 20 each, find the mean of
each sample, and compute a confidence interval for each one. The graph of the sampling distribution of the means
is on the left below, and that of the 50 confidence intervals is on the right.
1. What does each dot on the left hand dotplot represent?
StatKey Sampling Distribution for a Mean
Percent with Internet Access (Countries) ▾
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Choose samples of size n =
20
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Sampling Dotplot of Mean
Left Tail Two-Tail Right Tail
60
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samples = 50
mean = 41.626
std. error = 5.089
:
.:
:
::
0
25
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41.626
Data Plots
Confidence Intervals
95%->
Confidence Intervals
Coverage
48/50 = 96%
20
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2. Circle the confidence intervals that failed to capture the true mean.
3. Circle the sample means that produced those…
Example 4 (Part 1) One of the datasets in the Lock book
contains information about 215 countries of the world. One
of the variables is the percentage of people in the country
who have access to the internet. We have data for 203 of
those countries. The plot on the right shows a dotplot of
the data.
1. What are the cases?
Population
n = 203, mean = 43.024
median = 43.5, stdev = 29.259
20
2. What does each dot on the dotplot represent?
15
10
5
20
40
43.024
60
80
3. What type of data is do we collect from the cases, quantitative or categorical?
Let x be a random variable that represents the percentage of successful free throws a professional basketball player makes in a season. Let y be a random variable that represents the percentage of successful field goals a professional basketball player makes in a season. A random sample of n =6 professional basketball players gave the following information.
x
63
79
70
80
84
87
y
46
49
45
55
57
58
Find Se. Round your answer to three decimal places.
Chapter 11 Solutions
Essentials of Business Analytics (MindTap Course List)
Ch. 11 - Kelson Sporting Equipment, Inc., makes two types...Ch. 11 - The Sea Wharf Restaurant would like to determine...Ch. 11 - Blair Rosen. Inc. (BR) is a brokerage firm that...Ch. 11 - Round Tree Manor is a hotel that provides two...Ch. 11 - Industrial Designs has been awarded a contract to...Ch. 11 - Vollmer Manufacturing makes three components for...Ch. 11 - Photon Technologies, Inc., a manufacturer of...Ch. 11 - The Westchester Chamber of Commerce periodically...Ch. 11 - The management of Hartman Company is trying to...Ch. 11 - The employee credit union at State University is...
Ch. 11 - The Atlantic Seafood Company (ASC) is a buyer and...Ch. 11 - The Silver Star Bicycle Company will manufacture...Ch. 11 - The Clark County Sheriff’s Department schedules...Ch. 11 - Bay Oil produces two types of fuel (regular and...Ch. 11 - Consider the following network representation of a...Ch. 11 - Refer to the transportation problem described in...Ch. 11 - Aggie Power Generation supplies electrical power...Ch. 11 - The Calhoun Textile Mill is in the process of...Ch. 11 - Refer to the Calhoun Textile Mill production...
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