Solve the following dissolution exercises:
A. 3 aqueous solutions are mixed: 50 mL of 10% w/v HCl, 35 mL of 3.2% w/v NaCl and 65 mL of 13% w/v KCl, which is the final concentration of the solution in %p/v with respect to H +, Na +, K +, Cl-

B. What volumes of 8M, 5M and 3M HCl should be mixed to prepare 1 L of 6M HCl

C.

It is necessary to prepare 35 mL of 15% w/v H2O2 solution from a 5% w/v H2O2 solution and another 10% w/v solution. What volume should be used for each solution?

If V (dimension k-1) is a subspace of W (dimension K), and V has an orthonormal basis {v1,v2.....vk-1}. Work out a orthonormal basis of W in terms of that of V and the orthogonal complement of V in W.

Provide detailed reasoning.

Using Pasteur's experiment as a model, describe the essential features of good experimental design and identify those features in Pasteur's experiment.

compare the similarities and differences in the sampling, methodologies, and findings in two studies of your choice

one being an experiment and a quasi-experiment

1. Fashion Marketers can obtain a wealth of information from their own market customer databases.
   True
   False

QUESTION 4

1. One of the largest sources of secondary data is the federal government and its various agencies.
   True
   False

7 points   

QUESTION 5

1. Marketing Research is used when a business needs to define the overall size and makeup of the customer base for a product.
   True
   False

QUESTION 6

1. 
   
   The type of research in which data is collected once from a random sampling of people, offering a snapshot of statistics or opinions at a particular point in time, is called.

QUESTION 7

1. The most commonly used technique for gathering data is the focus group.
   True
   False

Match each term with the correct description:

You are a member of a research team that has been asked to create a proposal for a study design to address a potential cholera outbreak in Puerto Rico.

The Centers for Disease Control and Prevention is sending a team of epidemiologists to Puerto Rico to investigate cases of cholera associated with Hurricane Maria. As a team member, you are asked to research study design for the upcoming investigation, identifying the advantages and disadvantages of the following four designs as they relate to the mission:

Cross-sectional.

Case control.

Cohort.

Clinical trial.

Your job is to report back to leadership with a recommendation for a study design to be used in the investigation. You must also recommend an implementation strategy that considers the nature of the environment and the affected population.

You are a member of a research team that has been asked to create a proposal for a study design to address a potential cholera outbreak in Puerto Rico.

The Centers for Disease Control and Prevention is sending a team of epidemiologists to Puerto Rico to investigate cases of cholera associated with Hurricane Maria. As a team member, you are asked to research study design for the upcoming investigation, identifying the advantages and disadvantages of the following four designs as they relate to the mission:

Cross-sectional.

Case control.

Cohort.

Clinical trial.

Your job is to report back to leadership with a recommendation for a study design to be used in the investigation. You must also recommend an implementation strategy that considers the nature of the environment and the affected population.

Instructions

To successfully complete this assignment, you must include the following:

Outline the basic processes a team will use to investigate a public health threat.

Select the appropriate study design for investigating a disease outbreak.

Compare epidemiological strengths and weaknesses of study designs used in research and practice.

Recommend evidence-based epidemiological methods for investigating cases of disease outbreak after a natural disaster.

Describe how to control bias in an epidemiological research study.

Recommend implementation strategies for a disease investigation team.

The evidence supporting obesity as a risk factor for colon cancer remains inconclusive, especially among women. A study reported the association between obesity (measured at baseline) and colon cancer morbidity as determined from review of medical records and death certificates in a nationally representative cohort of men and women age 25-74 years who participated in the First National Health and Nutrition Examination Survey from 1971 to 1975 and were subsequently followed up through 1992. The following table is from this study for men and women combined.

a. Which of the following best describes the research design used in this study? Choose the ONE best answer. (1 point)

1. Cross-sectional survey
2. Ecological study
3. Population based case control study
4. Cohort study
5. None of the above

b. Complete the table above by calculating the crude body mass index-specific incidence rates. (Show your work in the table above.) (3 points – ½ point for each correct answer)

c. Calculate the relative risk (rate ratio) of colon cancer associated with a BMI of 30+. Use the lowest BMI category as the reference group. In one sentence interpret your answer. (2 points)

d. Calculate the attributable fraction among those in the 30+ BMI category. In one sentence interpret your answer. (The attributable fraction formulas provided in class can be used even though the data provided here is for rates.) (2 points)

Write a C++ console program that prompts a user to enter information for the college courses you have completed, planned, or are in progress, and outputs it to a nicely-formatted table. Name the CPP as you wish (only use characters, underscores and number in your file name. DO NOT use blank).

Its output should look something like this:

 Course     Year Units Grade 
 ---------- ---- ----- ----- 
 comsc-110  2015   4     A 
 comsc-165  2016   4     ? 
 comsc-200  2016   4     ? 
 comsc-155h 2014   4     A
 comsc-260  2017   4     ? 
 bus-90     2015   4     A

Here are the requirements:

1. Use a struct named Course with the 4 attributes needed for the table, named as you wish.
2. Use int or double for Units (your choice) and char or string for Grade (your choice).
3. Use ? or X or some other designation for Grades for courses in progress or planned (your choice).
4. Track the number of objects in use in the partially filled array -- that is, the size.
5. Use an object array of capacity 100 in the main program to track up to 100 course objects.
6. Include table column headings, correctly-spaced.
7. The total of all column widths should not exceed 80 spaces.
8. You choose which attributes to left-justify, right-justify, or center.
9. Use the string buffer method to cin numbers.
10. Serialize using a text file named "courses.txt". At the beginning of your program, you need to check if this file "courses.txt" exists. If it does, you read the data from this file and copy the data into your array. When your program is run for the first time, this file does not exists. But, it should exist on subsequent runs. Before your program exits, you need to save your course array to "courses.txt" file.
11. Utilize at least 2 functions.

And for structural requirements:

1. Never use global variables. Do not use global constants in this one, because they are not needed.
2. At your option, write a value-returning function of the prototype: Course cinOneCourse(int); to prompt the user for a single course, and return a filled-in Course object. The parameter's value is a sequence number: 0 or 1 for the first student, 1 or 2 for the next -- you decide whether to start at 0 or 1 in the input prompts. In main, copy the returned object to the next unused element of the array. You may use a for-loop in main to manage this.
3. At your option, write a void function with this prototype: void coutAllCourses(Course[ ], int); to cout the table header and all the in-use elements of the Course object array. Call the function from main, after each time a new course is added to the array. Or write it all in code blocks in main.
4. To end the for-loop before 100 courses get entered, allow the user to q or Q for the course. In the cinOneCourse function (or code block), skip input of the remaining attributes if the course is lowercase q or uppercase Q. In the for-loop in main that controls all this, break from the loop before calling the coutAllCourses (or code block) again if a q or Q course name is detected, and that ends the program.

Input/Output Sample:

A session might look like this, with user input in bold blue with [ENTER] to signify the Enter or Return key pressed, so that it's easier to see in the sample below. Note that it starts by outputting an empty table:

Course      Year Units  Grade 
----------- ---- ------ ----- 

Enter course #1 [Q to exit]: Comsc-165[ENTER]
What year for Comsc-165? [e.g., 2016]: 2016[ENTER]
How many units is Comsc-165? 4[ENTER]
And what was your grade [? for in-progress or planned]: ?[ENTER]

Course      Year Units  Grade 
----------- ---- ------ ----- 
comsc-165   2016    4     ? 

Enter course #2 [Q to exit]: Comsc-110[ENTER]
What year for Comsc-110? [e.g., 2016]: 2015[ENTER]
How many units is Comsc-110? 4[ENTER]
And what was your grade [? for in-progress or planned]: A[ENTER]

Course      Year Units  Grade 
----------- ---- ------ ----- 
comsc-165   2016    4     ? 
comsc-110   2015    4     A 

Enter course #3 [Q to exit]: q[ENTER]

Because this uses serialization, the above 2 courses should be serialized down (that is, saved) to a TXT file, and serialized up (that is, restored) the next time the program is executed. In that case, the program would start like this:

Course      Year Units  Grade 
----------- ---- ------ ----- 
comsc-165   2016    4     ? 
comsc-110   2015    4     A 

Enter course #3 [Q to exit]:

The user could then quit right away, using the program only to view the already-entered courses, or add to them.

This is just a sample. Yours should work the same way, with the same sequence of inputs (course, year, units, grade), and be nicely formatted and spaced. It should be something you'd be proud to show in a job interview.