An educational psychologist studies the effect of frequent testing on retention of class material. In one section of an introductory course, students are given quizzes each week. A second section of the same course receives only two tests during the semester. At the end of the semester, both sections receive the same final exam, and the scores are summarized below:

                                    Frequent Quizzes       Two Exams

                                            n = 20                    n = 20

                                           M = 73                   M = 68

1. Determine the correct t-test needed. If the first sample variance is s² = 38 and the second sample has s² = 42, do the data indicate that testing frequency has a significant effect on performance? Use a two-tailed test at the .05 level of significance. (Note: because the two samples are the same size, the pooled variance is simply the average of the two sample variances.) Draw your distribution. (2 pts)
2. Determine the correct t-test needed. If the first sample variance has s² = 84 and the second sample has s² = 96, do the data indicate that testing frequency has a significant effect? Again, use a two-tailed test with α = .05. Draw your distribution. (2 pts)
3. Using symbols, write up your results. Describe how the size of the variance affects the outcome of the hypothesis test. (1 pt)

The composition of output in the U.S. changed substantially during WWII, but has not changed

much since then. Provide some QUANTITATIVE detail about just how the composition of

output changed during WWII. Also, present QUANTITATIVE evidence that shows you

understand how the different components of output have tended to relate to each other since

WWII.

Diagram and describe how eukaryotic photosynthesis works. Include a labeled diagram of the appropriate cell structures, and show where each step occurs. (The level of detail for this question should be equivalent to the respiration question. This question is about the fundamental C3 pathway; you don’t need to include photorespiration or alternate photosynthetic pathways.)

(no bullet points, essay form)

1.) The cell reactions occurring in a battery are given by:

Cathode : 2MnO2 (s) + H2O (l) + 2e-→ Mn2O3 (s) + 2HO- (aq) E 0 red = +0.15 V

Anode : Zn (s) + 2HO- (aq) → Zn(OH)2 (s) + 2e- E 0 red = -1.25 V

a) What is the overall cell potential? What is the free energy change for this process?

b) During the discharge of the battery, 2.00 g of Mn2O3 is produced at the cathode. How many grams of Zn were consumed?

c) Consider this half reaction: Cd(OH)2 + 2e- → Cd(s) + 2HO- (aq) E°red = -0.76V What is the overall cell potential and free energy change of the battery described above if the Zn anode is replaced by Cd?

2.) Ca(s) can be obtained by electrolysis of molten CaCl2. What amperage is needed to produce 10.00 g of Ca(s) in a period of 1h assuming that the process is 100% efficient?

Mechanical systems must usually operate over a range of conditions. Unfortu- nately, one or more resonance points may have to be passed through during sys- tem startup to operating state or during system shutdown. How can this type of transitory resonance problem be addressed? What analytical tools could you use to convince someone of your approach?

Historically the S&P 500 Stock Index has returned about 8% a year but returns are very uneven as recent experience has reminded us - the INDEX declined by more than 50% from its peak in 2007 and took 7 years to attain that peak level again. This year (2019) the S & P 500 Index has gained about 10% through today’s date after declining almost 10% for last year( 2018). It has since recovered. In contrast a typical Money Market Fund has returned about 2% a year with minimal fluctuation. Given this, evaluate the following:

d) How risky would it be if you planned to use the Money Market fund as the major component of your retirement fund, 40 years from now? Briefly discuss your perception of risk in this decision, given your objective!

Very low                                                                                               Very high

                 risk              ____    ____    ____    ____    ____    ____    ____        risk

                                       1          2          3       4        5           6          7

            .

Briefly explain your decision: (2 points)

Preparation

Remember Sun City Boards, which you read about in the Why It Matters (Links to an external site.) and Putting It Together (Links to an external site.) sections of the Planning and Mission module? In this assignment, we’ll return to Sun City Boards and the management challenges its owner, Tom Wilson, faces. You’ll advise Tom on strategic management steps he and Sun City Boards should take to develop and implement their new strategy.

The Environments and Strategic Management module of your text introduced several strategic planning tools to use at different stages of the strategic management process. As an advisor for Sun City Boards, your assignment is to select one of the strategic management tools described in the reading, explain how it works, and explain why it will be of value to Sun City Boards. The following steps will help you prepare for your written assignment:

1. Thoroughly read the Environments and Strategic Management module.
2. Carefully consider the tools described in the reading to assist with the Objectives and Analysis step of the strategic management process.
3. Select one of the analysis tools to explain to Tom Wilson.

Your Task

Write a three-paragraph essay describing your chosen tool and why you selected it. Your essay must include three properly referenced and defined terms from the module reading. For example, if you select SWOT Analysis, you could include the definitions of each letter. Answer and address the following questions:

• What is the purpose of the tool? What conclusions will it help Sun City Boards draw?
• How does the tool work? How does it measure the relevant factors, or how does it derive importance from them?
• How will your selected tool align with other strategic steps in the process? In other words, when the analysis leads you to a conclusion, how will you use the conclusion in the next step?
• What specifically does the tool NOT address?

In addition to the text, you are encouraged to research your tool using reliable and properly cited Internet resources. You may also draw from your personal work experience with appropriate examples to support your references.

I choose strategy implementation as my analysis tool to explain to Tom Wilson.

Comment on the Amazon New York headquarters debacle that resulted this week in Amazon withdrawing its offer to build headquarters 2 in Long Island City. What were your feelings about Amazon (HQ2) coming to New York? How do you feel about the current withdrawal of this offer? Could anything have been done differently that might have saved this deal? Explain fully.

The Nurse-Client Relationship

In this discussion, we'll talk about the nurse-client relationship and the use of therapeutic communication as an important part of that relationship. Please answer the following questions:

What are your concerns or fears about mental health nursing in general? Are you interested in mental health nursing, or do you approach the topic with some anxiety?

What do you feel are essential aspects of a good nurse-client relationship?

Please include an example of how you established good rapport and a good professional relationship with a patient in the work or clinical setting. What nonverbal and verbal techniques did you use in this relationship?

Enzyme A is required to produce red pigment on the abdomen of a bird. A biochemist evaluated birds with red and pale (not red) abdomens and determined that a minimum of 50 units of Enzyme A is necessary to obtain red pigmentation. A new mutation in the gene that produces Enzyme A, results in only 10 units of Enzyme A in birds homozygous for the mutation. The mutation would be best considered as"

A: suppressor

B: null

C: co-dominant

D: gain of function

E: leaky