How does operationalization specify empirical procedures from measuring variables?

Operationalize the following: religious, success, grades, time, speed, and height.

List and describe the different measures of crime discussed in this chapter. Describe the units of analysis in each crime measure.

What are self-reports? List different types of crimes for which self-reports are appropriate. Discuss the validity and reliability of self-reports

Examine and critically discuss the following statement, with reference to relevant theory and empirical evidence: “Under the CAPM, the required rate of return on a firm's common stock is determined only by the firm's market risk. If its market risk is known, and if that risk is expected to remain constant, then analysts have all the information they need to calculate the firm's required rate of return and there should be no mispricing of stocks in the financial market.”

Trade-off theory is based on the premise that debt capital has some advantages and disadvantages (hence the trade-off). Discuss the advantages and disadvantages of using debt capital and provide an example of why it may impact on firm value. Additionally, what does trade-off theory imply about capital structure and what empirical evidence does trade-off theory fail to explain.

Consider learning theories you have been reading about in your course materials.

What is the evidence that TV or film portrayals of violence is linked to real world aggression?

Use at least one peer reviewed article or other empirical research to back up your conclusion.

What are alternative explanations for aggression and violence, rather than just observing violence on TV or film

. Assume X ~ N (10, 4).

1. What is the (approximate) distribution of X if the sample size is 100? Briefly discuss the theorem underlying your answer.
2. What happens to the variance of as the sample size increases? Draw a diagram and explain.
3. What two values of (symmetric around the population mean) contain a) 75% and b) 95% of the distribution? Draw a diagram. Relate your answer to b) to the empirical rule.

1. Chemical analysis of an unknown compound gives a molar mass of

334 g/mol and a percentage composition of 75.42% carbon, 6.63% hydrogen,

8.38% nitrogen, and the rest is oxygen. Calculate the empirical and molecular

formulas for the unknown compound.

2.) Write a balanced chemical equation for the complete combustion of

pentane (C5H12). If 100.00 g of pentane are combusted in excess O2, what mass

of CO2 would be released to the atmosphere?

Suppose

140

geology students measure the mass of an ore sample. Due to human error and limitations in the reliability of the​ balance, not all the readings are equal. The results are found to closely approximate a normal​ curve, with mean

83

g and standard deviation

3

g. Use the symmetry of the normal curve and the empirical rule as needed to estimate the number of students reporting readings between

80

g and

86

g.

rofessor Moriarty has never taken a formal statistics course; however, he has heard about the bell-shaped curve and has some knowledge of the Empirical Rule for normal distributions. Professor Moriarty teaches as Honors Quantum Physics class in which he grades on the bell curve. He assigns letter grades to his students' tests by assuming a normal distribution and utilizing the Empirical Rule. The Professor reasons that if IQ and SAT scores follow a normal distribution, then his students' scores must do so also. Therefore, upon scoring the tests, he determines the mean and standard deviation for his class. He then uses the Empirical Rule to assign letter grades so that 68% of the students receive a "C," 95% receive "B-D," and 99.7% receive "A-F."

The following test grades occur on the midterm exam for his class: 78 85 93 62 82 76 74 73 91 66 89 88 86 94 65 90 84 92 94 92 82 85 80 77 52 84 78 83

a) You are working as Professor Moriarty's graduate assistant and he has asked that you use the Empirical Rule to determine which of these grades he should assign as "A," "B," "C," "D," and "F." After finding the mean and standard deviation for the midterm grades, give the interval of test scores that will qualify for each letter category. (In other words, what range of scores will earn an "A," "B," and so on?) Also give how many students will earn each letter grade using this grading scheme.

b) Determine the number of students who would receive an "A," "B," "C," "D," and "F" using a standard grading scheme where 90-100 earns an "A," 80-89 earns a "B," 70-79 earns a "C," 65-69 earns a "D," and below 65 earns an "F." Describe this grade distribution and contrast it with the one that results from using the bell curve.

c) As a student of statistics, you have some concerns about Professor Moriarty's use of the normal distribution in this context. Discuss your concerns with your classmates. Why might his practice not be statistically sound? Provide statistical evidence to support your position so that you can justify your argument against this method of grading. (Statistical evidence could include measures of relative position, charts or tables, explanations supported by statistical knowledge or analysis, etc.)

Case Study

Win Vet High School is located in the heart of Sydney. It services students from Year eight (7) to Year twelve (12) in the local surrounding community.

Win Vet High School has hired you to create a front-end administrative website for updating student details to a database. The following are some notes that you have made following initial discussions with the principal and senior educational staff at Win Vet High School.

Based on the requirements you believe that at a minimum the following web pages need to be developed:

• A login web page
• A student web page

The website is to be written in HTML5, CSS, php using a MySQL database to store data. All web pages should be located within the same directory with any images to be stored in a sub-directory called “Images”. You have been supplied with an image called “Logo.png” which must be incorporated into all web pages. This is the high school’s logo as well as create a favicon to use for the website to ensure live presence.

Login web page

The Login web page should be the first web page that the user encounters when they visit the website. It is to contain a username and password fields and a login button to authenticate the user. The password field should also be masked.

Student web page

At the top of the web page a personalised message should be displayed to the user. This message should read “Welcome <<user>>”, where <<user>> is the users name. This name should be retrieved from the stored value that was create from the users being able to use a registration form you will create. This will be displayed after the user logins into the system using the Login page.

Create different themes for different user types. An example is one theme for every guest user (a user that can access the website, student user and an administration user.

For each theme you need to create a skin and CSS file. The skin file should apply styling to the CSS styling each of the web pages while the CSS should apply styling to the HTML elements on the web page. The settings in the skin and CSS files have been left to you but there should be a visible difference between each theme based on its title.

Under this should be the functionality to be able to retrieve, add, edit and delete a student.

Each student should receive a unique student id from the system when they are first added. This should be provided by a New button. Once clicked the system should look up the current highest student id, add 1 to it and then use this as the student id value for the new student. The student id field should be between 1,000 and 10,0000.

To add a student, the user should click the Add button once they have filled out all of the relevant information about the student. At a minimum the user should provide the following information as shown in the following table for a new student.

These details should be validated and then stored using MAMP MySQL database table so they can be accessed.

To retrieve, edit or delete an existing student the user should enter a valid student id, and then click an appropriate button (Retrieve, Update and Delete) to undertake the operation. Validation should occur to ensure that the student id exists for the student that is to be retrieved, deleted or have their details updated.

Usability functionality

As well as allowing a user to be able to change a theme the website should highlight which control the user is currently hovering the mouse cursor over. That is, when a user moves the mouse cursor over a control it should be highlighted in a different colour that none of the themes implement. Once the cursor is moved away from the control the highlighting should disappear.

QUESTION

Identify and report on attributes and determine data types that are required for your database ensuring that you undertake normalization of the attributes and draw the ERD Diagram as well