Chapter 08 - Sampling Methods and the Central Limit Theorem
Chapter 8
Sampling Methods and the Central Limit Theorem
1.
a.
b.
c.
d.
303 Louisiana, 5155 S. Main, 3501 Monroe, 2652 W. Central
Answers will vary
630 Dixie Hwy, 835 S. McCord Rd., 4624 Woodvill
Chapter 14 - Multiple Regression Analysis
Chapter 14
Multiple Regression Analysis
1.
a.
b.
c.
Multiple regression equation
the Y-intercept
$374,748 found by Y = 64,100 + 0.394(796,000) + 9.6(6940) 11,600(6.0) (LO 1)
2.
a.
b.
c.
d.
e.
Multiple regression e
Chapter 13 - Correlation and Linear Regression
Chapter 13
Correlation and Linear Regression
1.
X
4
5
3
6
10
4
6
5
7
7
28
X X Y Y X X
Y
2
9
-1.6
-0.6
-2.6
0.4
4.4
X X Y Y
2
X
Y
3.24
0.04
0.64
1.44
1.44
2.88
-0.12
2.08
0.48
5.28
6.8
10.6
29
29.2
5.8
sx
Chapter 11 - Two-Sample Tests of Hypothesis
Chapter 11
Two-Sample Tests of Hypothesis
1.
a.
b.
d.
e.
Two-tailed test
Reject Ho if z < 2.05 or z > 2.05
102 99
z
2.59, found by
52 6 2
40 50
Reject Ho
p = 0.0096, found by 2(0.5000 0.4952) (LO 1)
a.
b.
One-ta
Chapter 10 - One-Sample Tests of Hypothesis
Chapter 10
One-Sample Tests of Hypothesis
1.
a.
b
c.
d.
e.
2.
a.
b.
c.
Two-tailed, because the alternate hypothesis does not indicate a direction.
Reject Ho when z does not fall in the region from 1.96 and 1.96
Chapter 04 - Describing Data: Displaying and Exploring Data
Chapter 4
Describing Data: Displaying and Exploring Data
1.
a.
b.
c.
d.
Dot plot
15
7 and 1, respectively
2 and 3 (LO 1)
2.
a.
b.
19 and 4, respectively
12 (LO 1)
3.
Median = 53 found by (11 + 1)
Chapter 12 - Analysis of Variance
Chapter 12
Analysis of Variance
1.
9.01 from Appendix B.4
2.
9.78
3.
Reject Ho if F > 10.5, where df in numerator are 7 and 5 in the denominator.
s12 (10)2
2.04
F = 2.04, found by: F 2
s2 (7) 2
Do not reject Ho. There i
Chapter 09 - Estimation and Confidence Intervals
Chapter 9
Estimation and Confidence Intervals
1.
51.32 and 58.68, found by 55 2.576(10 / 49) (LO 3)
2.
38.911 and 41.089, found by 40 1.96(5 / 81) (LO 3)
3.
a.
b.
c.
4.
1.44, found by searching the normal t
Chapter 05 - A Survey of Probability Concepts
Chapter 5
A Survey of Probability Concepts
1.
2.
Outcome
1
2
3
4
1
A
A
F
F
2
A
F
A
F
(LO 1)
Outcome
1
2
3
4
5
6
7
8
9
1
A
A
A
R
R
R
S
S
S
2
A
R
S
A
R
S
A
R
S
(LO 1)
3.
a.
b.
0.176 found by 6/34
Empirical (LO 2
Chapter 03 - Describing Data: Numerical Measures
Chapter 3
Describing Data: Numerical Measures
1.
5.4 found by 27/5 (LO 2)
2.
5.5 found by 33/6 (LO 2)
3.
a.
b.
Mean = 7.0, found by 28/4
(5 7) (9 7) (4 7) (10 7) 0 (LO 2)
4.
a.
b.
4.2 found by 21/5
(1.3 4
Chapter 07 - Continuous Probability Distributions
Chapter 7
Continuous Probability Distributions
1.
1.1547 found by
d.
e.
f.
[1/(10 6)](10 6) = 1
0.75, found by [1/(10 6)](10 7)
0.5, found by [1/(10 6)](9 7) (LO 2)
a.
b.
a=2 b=5
3.5, found by (2 + 5)/2
c.
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State Name
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CourseName
Advanced Business Process and Options Management
Advanced Financial Mgmt & Policy
Advanced Textiles
Applied
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Applied Statistics
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Business Law I
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Business P
CAIS 101 Notes.1
Welcome to UB! Or, if more appropriate, Welcome back!
Academic prerequisites:
This course is for those with no prior exposure to probability and statistics. If youve had
some exposure to the material, but if it wasnt Excel-based, then tha
CAIS 101 Descriptive Statistics Practice Problems
Open a new spreadsheet. Open Albright file P2_6. Copy all the columns into your new
spreadsheet. Close P2_6.
1. What is the average family size for families whose total income is over $90K?
2. Create a new
Importing is the process of inserting data from another application
Data may be in an Access database, in a text file format, or stored on a mainframe
Text file data is often imported into Excel for use in a spreadsheet
Text files are made up of lette
Complaint
Too long to wait
Transferred to the wrong person
Could not get through to an agent
Got disconnected
Busy signal
Poor connection
Number of Complaints
184
10
85
37
420
8
Number of Complaints
500
400
300
200
100
0
Too long to wait
Number of Complai
Given two events A and B each with a non-zero probability, if the conditional probability of A
given B is zero, it implies that the events A and B are independent.
FALSE
For a binomial distribution in which the probability of success is p = 0.5, the varia
Final Exam Essay
Yoplait yogurt has difficult times and General Mills is trying to overcome crisis which
was caused by Greek variety of yogurts entering the market. The company focuses on things
like color and taste variety, original cup design and advert
Professor J. Hanson
Applied Statistics 102
Alina Sotnikova
5th of September, 2012
Homework #1
p.16, DiGiorno Pizza
1.
Population women of the age 20- 35 who like to order pizza.
DiGiorno Company could not focus on the entire population, so they send the
Probability
random phenomenon an event whose individual outcomes are uncertain but there is a regular
distribution in a large number of repetitions.
Examples: Coin tossing and dice rolling The lottery and other games of chance Drawing a
random sample fr
Explanatory and Response Variable
A response variable measures an outcome of a study
often called the dependent variable, y
An explanatory variable explains or causes changes in the response variable
often called the independent variable, x
In most s
Variables and their Measurements
Variable: Any characteristic that takes different values for different individuals in a sample or
population
Measurement scale: the type of measurements that the values of a variable take. 3 kinds: nominal,
ordinal, and