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Chapter Two
Accountants as Business
Analysts
A look at this chapter
As users, managers, designers, and evaluators of technology and technology-driven business processes,
accountan
Beach Rentals (BR) maintains an inventory of rental houses near universities and leases
those houses to student renters. This case describes their rental business process. BR
agents former marketing m
Identify the start and end events and the activities in the following narrative,
and then draw the business process model using BPMN:
1.
The Starbucks customer entered the drive-through lane
and stopp
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Chapter Three
Data Modeling
A look at this chapter
Todays accountants must understand how business processes generate data and how those data are
structured, interrelated, and sto
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Part One
AIS and the Business
Chapter 1
Accounting Information Systems and Firm Value
Chapter 2
Accountants as Business Analysts
Chapter 3
Data Modeling
Chapter 4
Relational Datab
Section 2.1 Using Derivatives To Find Relative Extrema
Consider the graph:
f(x) = x2 4x 5
Find:
Minimum/Maximum vertex?
Decreasing Interval where height is decreasing
from left to right
Increasing Int
Section 2.3 Asymptotes & Sketching Rational Functions
A rational function is a quotient
of 2 polynomials such as:
f ( x)
1
x 1
The line x = 1 is a vertical asymptote
The line y = 0 is a horizontal as
Section 2.2 Concavity & Inflection Points
Review: Use the 1st derivative to determine:
1) where a function is increasing/decreasing.
2) critical numbers by setting derivative = 0 or where f(x) is unde
Section 2.4 Absolute Minimum/Maximum
Given f(x) = 2x3 + 6x2 6 Find all relative extrema and sketch.
f (x) =
Critical numbers _
Rel min _
Rel max _
Notice there is no absolute min or max on the
interva
Section 2.5
Business Applications of Min/Max
General Maximization Problem
A manufacturer wants to form an open box from a 8 inch square. Squares are to
be cut from each corner and folded up to form th
Section 4.5 Integration by Substitution
Recall, if f ( x)
11
1 3
x 1
then f (x) = _ using the Chain
11
Rule
To find
2
3
3x x 1 dx we must undo the Chain Rule
10
Call the inner function u
_
The deriv
Section 4.4 Properties of Definite Integrals
Properties of the Definite Integral:
Find the shaded area:
The Area of a region bounded by 2 functions:
The area between 2 functions on the interval [a, b]
Section 4.3 Definite Integrals & Area
Definite Integral If f(x) is any continuous function on the interval [a, b] and
F(x) is the antiderivative of f(x) then
b
f ( x)dx F ( x)a F (b) F (a)
b
a
is the
Section 4.1 Integration
Integration
The process of undoing derivatives is called integration or anti-differentiation
Differential calculus determines the rate of change of a quantity. Integral calculu
Statistics CO22 with Robert Pred, Ph.D. Supplemental Readings Introduction to Hypothesis Testing for Single Sample Means: How to set up the Null and Alternate: The Null Hypothesis: Ho: The Null Hypoth
2102 Section 001 HW #4 Problem #15.12a Step 1: Ho: u1 = u2 = u3 = u4 = u5 Ha: Not Ho
Type of lacquer used has no statistically significant effect on the number of days until the first sign of corrosi
Stat 22 Section 001 HW #3 Problem #13.13 Step 1: Ho (Null) Ha (Alternative) Step 2: Alpha = .05 Two-Tail Test (Non-Directional Alternative Hypothesis) Rejection region would be in both tails, because
Statistical Applications: Estimation & Hypothesis Testing Concepts,Robert Pred, Ph.D., page 1 of 16 Drawing Conclusions: Statistical Power and Errors in Hypothesis Testing
Overview of Decision Making
Univariate Chisquare Test: Goodness of Fit test One Qualitative Random Variable; several or more groups Similar to Ztest for 2 sample proportions, but can extend to 3 or more groups
Step One: State t
#13.112 Days of Illness Study: Vitamin Supplement Group versus Placebo Group Step1 Ho: (MuSupplement-MuPlacebo) > 0 Same or significantly more illness with Supplements Ha: (MuSupplement-MuPlacebo) < 0
Review for Test 3
Chapter 5 and 6
Review Game
Four rounds, each with four questions
The round number is the point value of each
question
Answers will be given at the end of each
round for you to ke
Chapter 2 Review
Sections 2.1 & 2.2
Let f( x) = 4x 3 - 6 x 2 24x + 5
Find
f(x)
and
f(x)
(a)
List the critical points of the function.
(b)
Determine the intervals on which the function is increasing or
Section 2.6 Marginals
Instantaneous Rates of Change in Business
When a variable (such as cost, revenue or profit) changes with respect to
the quantity produced or sold, it is called marginal and is fo
1. If the null hypothesis was true false, the expected difference between 2 sample means would be B different from zero 2. The t-test for matched pairs is appropriate for comparing the B employees'