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
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
Chapter 09 - Estimation and Confidence Intervals
Chapter 9
Estimation and Confidence Intervals
1.
51.314 and 58.686, found by 55 2.58(10 / 49) (LO 3)
2.
38.911 and 41.089, found by 40 1.96(5/ 81) (LO
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 wi
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.
s 2 (10) 2
F = 12 =
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
Chapter 15 - Index Numbers
Chapter 15
Index Numbers
1.
114.6, found by ($19,989/$17,446)(100)
123.1, found by ($21,468/$17,446)(100)
124.3, found by ($21,685/$17,446)(100)
91.3, found by ($15,922/$17,
Chapter 14 - Multiple Regressions Analysis
Chapter 14
Multiple Regressions 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) 1
2010 Assignment Answers SG 15e
Chapter 1
What is statistics?
Part I
Part II
Part III
1. Quantitative
2. Qualitative
3. Quantitative
4. Qualitative
5. Quantitative
Part IV
6. Discrete
7. Discrete
8. Co
Chapter 13 - Correlation and Linear Regression
1.
( X X ) (Y Y ) ( X X )
Chapter 13
Correlation and Linear Regression
(Y Y )
( X X ) (Y Y )
X
Y
4
5
3
6
1
0
4
6
5
7
-1.6
-0.6
-2.6
0.4
-1.8
0.2
-0.8
1.2
Chapter 12 Review
Bus230
Time to think about what youve learned today. Work through each of the
following questions to see how much youve learned.
Feel free to work with your neighbor if youre not sur
Final Exam Practice Questions
Bus230
Here are a few questions from all of the material that we have covered this term. Use these in addition to
the material in your textbook to practice for the final
Chapter 9 Review
Bus230
Time to think about what youve learned today. Work through each of the
following questions to see how much youve learned.
Feel free to work with your neighbor if youre not sure
Chapter 10 Review
Bus230
Time to think about what youve learned today. Work through each of the
following questions to see how much youve learned.
Feel free to work with your neighbor if youre not sur
Chapter 02 - Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation
Chapter 2
Describing Data: Frequency Tables, Frequency Distributions, and
Graphic Presentation
1.
Peps
Chapter 04 - Describing Data: Displaying and Exploring Data
Chapter 4
Describing Data: Displaying and Exploring Data
1.
A histogram describes a frequency distribution using a series of adjacent rectan
A Review of Chapters 5 7
Answers to Section Two Exercises
A Review of Chapters 5 7
1.
a.
b.
c.
0.035 from Appendix B.9 where =0.8 and n = 15
0.018, found by 0.001 + 0.003 + 0.014
0.648, found by 0.250
A Review of Chapters 1 4
Part III
Answers to section one exercises
A Review of Chapters 1 4
1.
a.
b.
c.
Mean is 147.9. Median is 148.5. Standard deviation is 69.24
The first quartile is 106. The third
A Review of Chapters 8 and 9
Answers to Section Three Exercises
A Review of Chapters 8 and 9
1.
( 8.8 8.6 )
Pr z
= Pr cfw_z 0.59 = 0.5000 0.2224 = 0.2776
2.0
35
2.
( 1100 1210 )
Pr z
= Pr cfw_z
Chapter 18 - Nonparametric Methods: Analysis of Ranked Data
Chapter 18
Nonparametric Methods: Analysis of Ranked Data
1.
a.
b.
If the number of pluses (successes) in the sample is 9 or more, reject Ho
A Review of Chapters 13 and 14
Answers to Section Five Exercises
A Review of Chapters 13 and 14
a.
b.
c.
d.
e.
2.
Net profit
Y = a + b1 X 1 + b2 X 2 + b3 X 3 + b4 X 4
$163,200
About 86% of the variati
A Review of Chapters 10 12
Answers to Section Four Exercises
A Review of Chapters 10 12
1.
Ho: 36
H1: < 36
Reject Ho if t < 1.683
35.5 36.0
z=
= 3.60 Reject Ho. The mean height is less than 36 inches.
Chapter 16 - Time Series and Forecasting
Chapter 16
Time Series and Forecasting
1.
The weighted moving averages are:
31584.8
33088.9
34205.4
34899.8
35155.0
34887.1
The trend increases the first few y
A Review of Chapters 17 and 18
Answers to Section Seven Exercises
A Review of Chapters 17 and 18
1.
H0: Median 60
H1: Median > 60
The sample has 16 values above 60. From a binomial table ( n = 20, p =
A Review of Chapters 15 and 16
Answers to Section Six Exercises
A Review of Chapters 15 and 16
1.
a.
b.
c.
106.1, found by (157/148)100.
100.0, found by (157/157)100.
147.3 + 4.9t and 186.5, found by
Chapter 01 - What is Statistics?
Chapter 1
What is Statistics?
1.
a.
c.
e.
Interval
Interval
Ordinal
b.
d.
f.
Ratio
Nominal
Ratio (LO6)
2.
a.
c.
Ratio
Ratio
b.
d.
Nominal
Ratio (LO6)
3.
Answer will va
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) +
Chapter 19 - Statistical Process Control and Quality Management
Chapter 19
Statistical Process Control and Quality Management
1.
40
0.5
0.4
30
0.3
20
0.2
10
0.1
0
Problem not corrected
Unfriendly
Invo
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