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Elementary Statistics with MyStatLab Access Code [With CDROM]
12th Edition
ISBN: 9780321890238
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 7, Problem 8CRE
To determine
To check: Whether or not, based on the
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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
Suppose the Internal Revenue Service reported that the mean tax refund for the year 2022 was $3401. Assume the standard deviation is $82.5 and that the amounts refunded follow a normal probability distribution. Solve the following three parts? (For the answer to question 14, 15, and 16, start with making a bell curve. Identify on the bell curve where is mean, X, and area(s) to be determined.
1.What percent of the refunds are more than $3,500?
2. What percent of the refunds are more than $3500 but less than $3579?
3. What percent of the refunds are more than $3325 but less than $3579?
A normal distribution has a mean of 50 and a standard deviation of 4. Solve the following three parts?
1. Compute the probability of a value between 44.0 and 55.0.
(The question requires finding probability value between 44 and 55. Solve it in 3 steps.
In the first step, use the above formula and x = 44, calculate probability value.
In the second step repeat the first step with the only difference that x=55.
In the third step, subtract the answer of the first part from the answer of the second part.)
2. Compute the probability of a value greater than 55.0.
Use the same formula, x=55 and subtract the answer from 1.
3. Compute the probability of a value between 52.0 and 55.0.
(The question requires finding probability value between 52 and 55. Solve it in 3 steps.
In the first step, use the above formula and x = 52, calculate probability value.
In the second step repeat the first step with the only difference that x=55.
In the third step, subtract the answer of the first part from the…
Chapter 7 Solutions
Elementary Statistics with MyStatLab Access Code [With CDROM]
Ch. 7.2 - 2. Margin of Error For the poll described in...Ch. 7.2 - Statistical Literacy and Critical Thinking
1. Poll...Ch. 7.2 - 3. Notation For the poll described in Exercise 1,...Ch. 7.2 - 4. Confidence Levels Given specific sample data,...Ch. 7.2 - Finding Critical Values. In Exercises 5-8, find...Ch. 7.2 - Prob. 6BSCCh. 7.2 - Finding Critical Values. In Exercises 5-8, find...Ch. 7.2 - Finding Critical Values. In Exercises 5-8, find...Ch. 7.2 - Formats of Confidence Intervals. In Exercises...Ch. 7.2 - Formats of Confidence Intervals. In Exercises...
Ch. 7.2 - Formats of Confidence Intervals. In Exercises...Ch. 7.2 - Formats of Confidence Intervals. In Exercises...Ch. 7.2 - Constructing and Interpreting Confidence...Ch. 7.2 - Constructing and Interpreting Confidence...Ch. 7.2 - Constructing and Interpreting Confidence...Ch. 7.2 - Constructing and Interpreting Confidence...Ch. 7.2 - 17. Gender Selection The Genetics and IVF...Ch. 7.2 - 18. Gender Selection The Genetics and IVF...Ch. 7.2 - Prob. 19BSCCh. 7.2 - 20. Mendelian Genetics When Mendel conducted his...Ch. 7.2 - 21. Online Books A Consumer Reports Research...Ch. 7.2 - 22. Want Boss’s Job? In a USA Today survey, 20.8%...Ch. 7.2 - 23. Job Interviews In a Harris poll of 514 human...Ch. 7.2 - 24. Job Interviews In a Harris poll of 514 human...Ch. 7.2 - Prob. 25BSCCh. 7.2 - Prob. 26BSCCh. 7.2 - Prob. 27BSCCh. 7.2 - Prob. 28BSCCh. 7.2 - Determining Sample Size. In Exercises 29-36, use...Ch. 7.2 - Determining Sample Size. In Exercises 29-36, use...Ch. 7.2 - Determining Sample Size. In Exercises 29-36, use...Ch. 7.2 - Determining Sample Size. In Exercises 29-36, use...Ch. 7.2 - Prob. 33BSCCh. 7.2 - Determining Sample Size. In Exercises 29-36, use...Ch. 7.2 - Determining Sample Size. In Exercises 29-36, use...Ch. 7.2 - Determining Sample Size. In Exercises 29-36, use...Ch. 7.2 - Using Appendix B Data Sets. In Exercises 37 and...Ch. 7.2 - Using Appendix B Data Sets. In Exercises 37 and...Ch. 7.2 - 39. Finite Population Correction Factor For...Ch. 7.2 - 40. Confidence Interval from Small Sample Special...Ch. 7.2 - Prob. 41BBCh. 7.2 - Prob. 42BBCh. 7.2 - Prob. 43BBCh. 7.3 - In Exercises 1-3, refer to the accompanying screen...Ch. 7.3 - Statistical Literacy and Critical Thinking
In...Ch. 7.3 - In Exercises 1-3, refer to the accompanying screen...Ch. 7.3 - 4. Normality Requirement What does it mean when we...Ch. 7.3 - Using Correct Distribution. In Exercises 5-8,...Ch. 7.3 - Using Correct Distribution. In Exercises 5-8,...Ch. 7.3 - Using Correct Distribution. In Exercises 5-8,...Ch. 7.3 - Using Correct Distribution. In Exercises 5-8,...Ch. 7.3 - Confidence Intervals. In Exercises 9-24, construct...Ch. 7.3 - Confidence Intervals. In Exercises 9-24, construct...Ch. 7.3 - Confidence Intervals. In Exercises 9-24, construct...Ch. 7.3 - Confidence Intervals. In Exercises 9-24, construct...Ch. 7.3 - Prob. 13BSCCh. 7.3 - Prob. 14BSCCh. 7.3 - Prob. 15BSCCh. 7.3 - Prob. 16BSCCh. 7.3 - Prob. 17BSCCh. 7.3 - Prob. 18BSCCh. 7.3 - Prob. 19BSCCh. 7.3 - Prob. 20BSCCh. 7.3 - Prob. 21BSCCh. 7.3 - Prob. 22BSCCh. 7.3 - Confidence Intervals. In Exercises 9-24, construct...Ch. 7.3 - Prob. 24BSCCh. 7.3 - Prob. 25BSCCh. 7.3 - Prob. 26BSCCh. 7.3 - Prob. 27BSCCh. 7.3 - Prob. 28BSCCh. 7.3 - Prob. 29BSCCh. 7.3 - Prob. 30BSCCh. 7.3 - Prob. 31BSCCh. 7.3 - Prob. 32BSCCh. 7.3 - Prob. 33BSCCh. 7.3 - Prob. 34BSCCh. 7.3 - Prob. 35BBCh. 7.3 - Prob. 36BBCh. 7.3 - Prob. 37BBCh. 7.3 - Prob. 38BBCh. 7.3 - Prob. 39BBCh. 7.3 - Prob. 40BBCh. 7.3 - Prob. 41BBCh. 7.4 - 1. LDL Cholesterol Using the 40 LDL cholesterol...Ch. 7.4 - Prob. 2BSCCh. 7.4 - Prob. 3BSCCh. 7.4 - Prob. 4BSCCh. 7.4 - Prob. 5BSCCh. 7.4 - Prob. 6BSCCh. 7.4 - Prob. 7BSCCh. 7.4 - Prob. 8BSCCh. 7.4 - Prob. 9BSCCh. 7.4 - Prob. 10BSCCh. 7.4 - Prob. 11BSCCh. 7.4 - Finding Confidence Intervals. In Exercises 9-16,...Ch. 7.4 - Prob. 13BSCCh. 7.4 - Prob. 14BSCCh. 7.4 - Prob. 15BSCCh. 7.4 - Prob. 16BSCCh. 7.4 - Prob. 17BSCCh. 7.4 - Prob. 18BSCCh. 7.4 - Determining Sample Size. In Exercises 19-22,...Ch. 7.4 - Prob. 20BSCCh. 7.4 - Prob. 21BSCCh. 7.4 - Prob. 22BSCCh. 7.4 - Prob. 23BBCh. 7 - Prob. 1CQQCh. 7 - Prob. 2CQQCh. 7 - Prob. 3CQQCh. 7 - Prob. 4CQQCh. 7 - Prob. 5CQQCh. 7 - Prob. 6CQQCh. 7 - Prob. 7CQQCh. 7 - Prob. 8CQQCh. 7 - Prob. 9CQQCh. 7 - Prob. 10CQQCh. 7 - 1. Overpaid In a Gallup poll of 557 randomly...Ch. 7 - Prob. 2RECh. 7 - Prob. 3RECh. 7 - Prob. 4RECh. 7 - Prob. 5RECh. 7 - Prob. 6RECh. 7 - Prob. 7RECh. 7 - Prob. 8RECh. 7 - Prob. 9RECh. 7 - Prob. 10RECh. 7 - Prob. 1CRECh. 7 - Prob. 2CRECh. 7 - Prob. 3CRECh. 7 - Prob. 4CRECh. 7 - Prob. 5CRECh. 7 - Prob. 6CRECh. 7 - 7. Purell Survey In a survey of 1003 people, 59%...Ch. 7 - Prob. 8CRECh. 7 - Prob. 9CRECh. 7 - Prob. 10CRECh. 7 - Prob. 1FDDCh. 7 - Prob. 2FDDCh. 7 - Prob. 3FDDCh. 7 - Prob. 5FDDCh. 7 - Prob. 6FDD
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