Suppose there is a linear association between crime rate and percentage of high school graduates.
a) State the full and reduced model
b)Obtain SSE(F), SSE(R), df(F), fd(R), test statistics F for the general linear test and decision rule.
crime rate, high school grad %
8487 74 8179 82 8362 81 8220 81 6246 87 9100 66 6561 68 5873 81 7993 74 7932 82 6491 75 6816 82 9639 78 4595 84 5037 82 4427 79 6226 78 10768 73 8335 77 12311 65 10104 77 10503 76 7562 79 8593 79 7133 78 10205 84 14016 78 5959 81 3764 89 4297 85 7562 77 4844 74 5777 80 3599 84 3219 88 11187 75 2105 77 6650 78 11371 61 4517 91 7348 83 5696 77 4995 85 9248 70 6860 88 9776 80 4280 82 11154 82 3442 82 9674 70 7309 64 4530 79 4017 83 7122 77 5689 76 6109 80 3343 84 5029 82 4330 81 5425 74 8769 81 6880 76 6538 78 6521 78 9423 79 9697 83 3805 79 3134 83 3433 81 2979 84 6836 64 5804 67 7986 75 10994 73 11322 77 8937 64 8807 75 11087 80 10355 83 7858 85 3632 91 8040 88 6981 83 7582 76
In: Math
A researcher studied the relationship between the salary of a working woman with school-aged children and the number of children she had. The results are shown in the following frequency table:
Number of Children
|
Salary |
2 or fewer children |
more than 2 children |
|
high salary |
13 |
2 |
|
medium salary |
20 |
10 |
|
low salary |
30 |
25 |
If a working woman has more than 2 children, what is the probability she has a low or medium salary?
A. 0.79 B. 0.45 C. 0.35 D. 0.95
In: Math
Paula Gibson, an elementary school teacher in an upscale progressive city, was arrested by an undercover policeman for openly engaging in sexual activity with two men at a singles’ club party. She was recommended for dismissal by her principal, Hank Doss, based on this conduct. Her defense was that these acts took place at a private party and should have no impact on her capacity to teach.
In: Operations Management
The IQs of students at Wilson Elementary School were measured recently and found to be normally distributed with a mean of 110 and a standard deviation of 13. What is the probability that a student selected at random will have the following IQs? (Round your answers to four decimal places.)
(a) 140 or higher
(b) 115 or higher
(c) between 110 and 115
(d) 100 or less
In: Math
For this assignment, pretend you have been hired by a school district to create an application enabling access to educational videos freely available on the Internet.
For examples of places where these videos are available, check out this page:
https://www.refseek.com/directory/educational_videos.html (Links to an external site.).
For this assignment, you are responsible for developing a database schema (both conceptual and physical) to support this application. The schema must support the following application features:
The submission for this assignment should include the following artifacts:
This assignment can be completed adequately using as few as four tables. Your schema may end up with more tables and that is fine, but if you end up with more than 7-8 tables there is a good chance you are overthinking things.
In: Computer Science
In Java for beginners:
The math teacher at Garfield High School, Mr. Escalante, is looking for new ways to help his students learn algebra. They are currently studying the line equation ( y = m * x + b ). Mr. Escalante wants to be able to give his students a phone app that they can use to study for the midterm exam. This is what he'd like the program to do:
The user will be presented with the option to study in one of 3 modes, or to quit the program:
In each mode, all of the given values should be randomly generated integers between -100 and +100. This means that the correct answer must be calculated by the program.
Once the student selects a mode, the program will continue to present randomly generated questions until the student has correctly answered 3 questions in a row. If the student attempts more than 3 questions in a particular mode, a hint about how to solve the problem should be given before the next question is presented.
After the student has correctly answered 3 questions in a row, an overall score (the number of questions answered correctly divided by the total number of questions attempted) should be displayed, and the menu is presented again.
DIRECTIONS
Your program must
This is a three-part staged assignment. You must complete part 1 with at least 80% success before you can begin part 2, and the same with part 3. After you've completed and submitted each part, you can proceed to the next part by selecting the drop-down arrow next to the assignment title. You will need to complete all parts to receive full credit.
---------------------------------------------------------------------------------------------
Part 1. Solve for y.
Write a program with a that displays a randomly generated problem that asks the user to solve for the y variable, takes input from the user, and prints "correct" if the user answered correctly and prints "incorrect" if not. Your main should give one problem and then exit. Use one or more methods to produce this behavior. Example interactions: Given: m = 10 x = 3 b = 2 What is the value of y? 32 Correct! Given: m = 6 x = 9 b = 3 What is the value of y? 52 Sorry, that is incorrect. The answer is 57.
Part 2. Solve for y, m and b.
Add 2 choices that behave similarly to your part 1 program, but have the user solve for m and b instead. These choices should also randomly generate problems, and print if the user answers correctly. Your main program should display a menu asking which type of question to ask: Select 1 to Solve for Y, 2 to Solve for M, 3 to Solve for B and 4 to quit. When the user selects the question type, one question should be asked, then the user should return to the menu. This should repeat until the user selects quit, then the program should exit. Use one or more methods and loops to produce this behavior.
Part 3.Three in a Row with Hints.
Update your program so that each problem type mode will repeatedly ask questions until the user gets 3 correct answers in a row. If the attempts more than 3 questions in a particular mode, the program should provide a hint on how to solve problems of this type. After the student has correctly answered 3 questions in a row, an overall score (the number of questions answered correctly divided by the total number of questions attempted) should be displayed, and the menu is presented again.
In: Computer Science
Al finds an expensive watch as he is walking from the parking lot into school. The clasp looks broken, so he takes it to a jeweler to have it appraised. While pretending to look at the clasp, the jeweler’s employee removes one of the gem stones surrounding the watch face and steals it.
(a) If Al sues the jeweler and the jeweler’s employee for theft, will he succeed? If Tim, the true owner, sees Al in the jewelry store and confronts him with proof of his ownership does Al have to relinquish the watch to Tim?
(b) Assume Al knew the watch was Tim’s due to an inscription on the back of the watch. Is Al guilty of a tort, if he does not return the watch? Is he required to try to find Tim and let him know about the watch?
(c) Assume Tim knows he has lost the watch. He goes back to the parking lot to look for it but does not find it. Tim leaves for Florida the next day, and gives up his search for the watch. How does this affect Al’s rights to the watch. Explain how the law applies to the facts.
In: Finance
A researcher studied the relationship between the salary of a working woman with school-aged children and the number of children she had. The results are shown in the following frequency table:
Number of Children
|
Salary |
2 or fewer children |
more than 2 children |
|
high salary |
13 |
2 |
|
medium salary |
20 |
10 |
|
low salary |
30 |
25 |
If a working woman has more than 2 children, what is the probability she has a low or medium salary?
A. 0.79 B. 0.45 C. 0.35 D. 0.95
14. The expected number of heads in 410 tosses of a fair coin is:
In: Math
Maxie Coppinger, an office worker at ToledoTechnical School, is waiting for the administrative manager to return from lunch. Maxie has borne the brunt of several offensive office political games within the past six weeks. In her wait for Mr. Darrell Williams, the administrative manager, to return she contemplates what she should do about this latest trick. Should she make a scene and confront the two women she suspects are behind these acts, should she quit her job, or should she seek legal counsel? This latest tactic has crossed the line, and Maxie has had it. When Mr. Williams returns, Maxiefollows him into his office, places a letter addressed to her husband on Mr. Williams’desk, and asks him to read it. Mr. Williamsis perplexed but begins to read. He can see real anger in Maxie’s face and overall demeanor. In a very few sentences, he ascertains that the letter strongly suggests to her husband that Maxie is having an affair at work. Maxie wants to know what Mr.Williams plans to do about this accusation and outright lie. She denies any affair is going on and is willing to confront her accuser(s)—whoever they may be. Her husband feels Toledo Technical School should put an end to these games.
Questions:
1. If you were Mr. Williams, what would be your initial reaction?
2. In your opinion, does the company become responsible for serious allegations made by a coworker to another coworker?
3. If you were Mr. Williams, how would you advise Maxie?
In: Operations Management
A college's data about the incoming freshmen indicates that the mean of their high school GPAs was
3.5,
with a standard deviation of
.20;
the distribution was roughly mound-shaped and only slightly skewed. The students are randomly assigned to freshman writing seminars in groups of
25.
What might the mean GPA of one of these seminar groups be? Describe the appropriate sampling distribution model, including shape, center, and spread, with attention to assumptions and conditions. Make a sketch using the 68-95-99.7 Rule.
In: Math