STATS:DATA+MODELS-MY LAB ACC >CUSTOM<
21st Edition
ISBN: 9780137643127
Author: DeVeaux
Publisher: PEARSON
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Chapter 2, Problem 16E
a.
To determine
Identify the shape histogram distribution of shoe sizes for men and women
b.
To determine
Find the number of modes in the histogram of shoe sizes for men and women.
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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 2 Solutions
STATS:DATA+MODELS-MY LAB ACC >CUSTOM<
Ch. 2.3 - You may be surprised to find that you already have...Ch. 2.3 - Prob. 2JCCh. 2.3 - Prob. 3JCCh. 2.3 - Prob. 4JCCh. 2.3 - Prob. 5JCCh. 2.5 - Prob. 6JCCh. 2.5 - Prob. 7JCCh. 2.5 - Prob. 8JCCh. 2 - Prob. 1ECh. 2 - 2. Nonoccupant fatalities The frequencies of...
Ch. 2 - 3. Movie genres The pie chart summarizes the...Ch. 2 - 4. Movie ratings The Motion Picture Association of...Ch. 2 - Prob. 5ECh. 2 - 6. Marriage in decline Changing attitudes about...Ch. 2 - 7. Traffic fatalities 2013 Here are two histograms...Ch. 2 - 8. Traffic fatalities 2013 again Here are the same...Ch. 2 - Prob. 9ECh. 2 - Prob. 10ECh. 2 - 11. E-mails A university teacher saved every...Ch. 2 - 12. Adoptions The U.S. Census Bureau keeps track...Ch. 2 - Prob. 13ECh. 2 - Prob. 14ECh. 2 - Prob. 15ECh. 2 - Prob. 16ECh. 2 - Prob. 17ECh. 2 - Prob. 18ECh. 2 - Prob. 19ECh. 2 - Prob. 20ECh. 2 - Prob. 21ECh. 2 - 22. Adoptions III For the number of adoptions in...Ch. 2 - Prob. 23ECh. 2 - Prob. 24ECh. 2 - 33. Thinking about shape Would you expect...Ch. 2 - 34. More shapes Would you expect distributions of...Ch. 2 - Prob. 35ECh. 2 - Prob. 36ECh. 2 - Prob. 37ECh. 2 - Prob. 38ECh. 2 - Prob. 39ECh. 2 - Prob. 40ECh. 2 - Prob. 41ECh. 2 - Prob. 42ECh. 2 - Prob. 43ECh. 2 - Prob. 44ECh. 2 - 45. Cereals The histogram shows the carbohydrate...Ch. 2 - Prob. 46ECh. 2 - 47. Heart attack stays The histogram shows the...Ch. 2 - 48. *Bird species 2013 The Cornell Lab of...Ch. 2 - 49. Super Bowl points 2016 How many points do...Ch. 2 - 50. Super Bowl edge 2016 In the Super Bowl, by how...Ch. 2 - Prob. 51ECh. 2 - Prob. 52ECh. 2 - Prob. 53ECh. 2 - 54. Sick days During contract negotiations, a...Ch. 2 - 55. Floods 2015 Here are the annual numbers of...Ch. 2 - 56. Tornadoes 2015 Here are the annual numbers of...Ch. 2 - Prob. 57ECh. 2 - Prob. 58ECh. 2 - Prob. 59ECh. 2 - 60. Neck size The histogram shows the neck sizes...Ch. 2 - Prob. 61ECh. 2 - 62. Neck sizes again Look again at the histogram...Ch. 2 - 63. Movie lengths 2010 The histogram shows the...Ch. 2 - 64. Golf drives 2015 The display shows the average...Ch. 2 - Prob. 65ECh. 2 - Prob. 66ECh. 2 - Prob. 67ECh. 2 - Prob. 68ECh. 2 - Prob. 69ECh. 2 - Prob. 70ECh. 2 - Prob. 71ECh. 2 - Prob. 72ECh. 2 - Prob. 73ECh. 2 - 74. Major hurricanes 2013 The following data give...Ch. 2 - Prob. 75ECh. 2 - Prob. 76ECh. 2 - Prob. 77ECh. 2 - Prob. 78ECh. 2 - Prob. 79ECh. 2 - Prob. 80ECh. 2 - Prob. 81ECh. 2 - Prob. 82ECh. 2 - Prob. 83ECh. 2 - 84. Boomtowns 2015 In 2015, the website...Ch. 2 - Prob. 85ECh. 2 - Prob. 86E
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