A random sample of 22 students’ weights is drawn from student population. Investigate whether the average weight of student population is different from 140 lb. 135 119 106 135 180 108 128 160 143 175 170 205 195 185 182 150 175 190 180 195 220 235 State the null and alternative hypothesis (Ho and Ha). What are the n,X ̅, s? Compute the t-statistic. What is the degree of freedom (df)? Find P-value from the table-D. Test the hypothesis at the significance level α=0.05. Reject Ho or Ha? Why? What conclusion can you make about the mean weight of students? Construct 95% Confidence Interval for the students’ mean weight. What value for t* should you use? Find the t* value from table-D. Do the calculation for the 95% Confidence Interval. Based on the 95% Confidence Interval from i), what conclusion can you make about the hypothesis in a)? Why?

(Answer all the questions and in a word document plz)

Firm : Starbucks

Analyze three actions taken by the firm that affect the objective of sustainability?At least one of these actions should relate to environmental sustainability and at least one should relate to social responsibility. For each action, explain how it affects the environment and/or society, and how those impacts contribute to or detract from the objective of sustainability. Then interpret each action’s impact on the firm’s profits. Is it a profit-maximizing action? Does it negatively impact the firm’s profits? Explain and, where possible, use the tools and ideas that we have developed in class to back up your discussion.

*Write about two to three paragraphs answering the questions above.

Read the case “Cola Wars in China: The Future Is Here”. In light of the case (only use the case narrative – no external sources about Wahaha are approved) AND materials covered in the course, answer the following questions: Which business-level strategy was Wahaha following? Does it make sense? Explain. List the competitive tactics Wahaha used to gain market share in China. Keeping the timeline in mind, which 2 of these strategies/tactics proved to be most effective? Support your answer. Which corporate-level strategies should Wahaha adopt/continue (given the case information) to compete successfully against such large MNEs? Explain.

Transport Across Membranes
Trans-membrane transport can occur in 3 different processes. Simple diffusion through an equilibrium channel facilitated diffusion and active transport. To examine these processes we are going to use yeast cells and some simple model systems.

Staining with Neutral Red
Take a 20ml sample of yeast culture and divide equally into two boiling tubes, Ensure you agitate yeast culture when collecting and dividing to avoid settling.
•   Next add 5ml NaCO3 solution (1% aq) to each tube
•   Heat one boiling tube for 5 minutes at 95℃ in the water bath to kill the yeast.
•   Allow cooling
•   Take samples for methylene blue staining (see below) (use autopipette)
•   Add 1ml dye soltn (Neutral Red 1mg/ml(aq) ) to both boiling tubes (use autopipette)
•   Wait for 15 minutes and observe if there is any change in color

Separation of cells by centrifugation
•   Transfer a 10ml sample from each boiling tube to a 15ml centrifuge tube
•   Centrifuge at 2,500 rpm 5min. (this will be done for you)
•   Compare any difference in color in pellet and supernatant
•   Decant each supernatant carefully into a spectrophotometer cuvette
•   Read the two samples at 520nm in the Visible Spectrophotometer
Staining with Methylene Blue
•   take 100 µl of each yeast sample (agitate beforehand) and place in a microcentrifuge tube
•   add 100 µl of Methylene Blue solution (0.1mg/ml (aq) (use autopipette)
•   incubate for 5 min at RT

Microscope observations
•   prepare slides of all your 4 samples (from before centrifugation!) by placing a drop on a microscope slide and adding a coverslip.
•   observe at high magnification (x400)
•   count the proportion of colored and non-colored cells in a random sample of 100 cells.

Diffusion of Methylene Blue through Agar
•   Add 1 crystal of methylene blue to the surface of an agar plate
•   Record the distance which the color diffuses at 10 min intervals over 1 hour

question:

discuss the differences between living and killed yeast cells .which transport processes do you expect to be present? provide molecular structures of dyes used. Explain the usage of the dyes in this experiment and how this works.

Consider 2 nurses: Diana and Susan. They work on similar positions and earn the same wage of $30 per hour. They both spend their 24 hours a day time between work and leisure. They both have to work at least 6 hours a day and need at least 9 hours of leisure.    

The difference between Diane and Susan is in their attitude/demand for leisure:

• If Diane’s wage goes up, she works more (i.e. demands less leisure).
• If Susan’s salary goes up, she works less (i.e. demands more leisure).

Assume that their work allows them to scale up or down their hours.

1. Currently both nurses are working 9 hours. Starting from their current wage of $30 per hour draw Diane’s and Susan’s functions of demand for leisure. (Hint: hours of leisure on horizontal axis and price of leisure – their wage on vertical axis.) Assume that each section of their demand for leisure is represented by a straight line.

2.Explain why we consider their wage as “price of leisure”.

3.Given that they both maximize their utility, explain the difference between their demand curves. Use the income and substitution effect in your explanation. To do that, draw two graphs (for Diane and Susan) showing their consumer choice if the price of leisure increases. Hint: use the quantities of leisure on the horizontal and all other goods on the vertical axis.   

Principle of Conservation Energy is always being applied to solve engineering mechanic analysis. Explain what is Principle of Conservation Energy and when it is suitable to use this principle. Use appropriate real life application in your discussion.

Which of the family members could donate red blood cells for transfusion of any of the four ABO blood types? [2 sentences] (Note that, for the ABO blood group, the serum of blood [the liquid part in which red blood cells are suspended] naturally carries antibodies to the A and B antigens not present on the red cells of that individual's blood. Also note, that for blood transfusions, the donor’s serum is removed so only the red blood cells alone are injected into the recipient’s body].

You have just been asked to develop a resource scarcity mitigation plan for your company. What information do you need to know about the resources your company uses? How will you use this information?

(2-3 paragraphs please) (5-6 sentences each)

All of us have been shaped by both nature (biology) and nurture (environment), making us the persons we are today. In most cases, it is difficult to completely disentangle the separate effects of nature vs. nurture with much certainty. However, we can make some educated guesses based on our knowledge of familial tendencies that we may have inherited, as well as knowledge of our environment and experiences. In this section, we ask for you to make some educated guesses about the roles of nature and nurture in your life.

Describe the role of nature (biology) in shaping what kind of person you are today. Provide a specific example of the role of nature.

Describe the role of nurture (environment) in shaping what kind of person you are today. Provide a specific example of the role of nurture.

Write a minimum of 2 paragraphs with no spelling or grammatical errors. Looking for an educated response with a reference listed if used.

3. A company wants to find out if the average response time to a request differs across its two servers. Say µ1 is the true mean/expectation response time on server 1 and µ2 the true mean/expectation response time on server 2. Independent samples across the two servers is taken. 196 observations on server 1 return a sample mean of X¯ = 12.5 seconds and a sample variance of s 2 = 9 seconds. 225 observations on server 2 return a sample mean of X¯ = 12.2 seconds and a sample variance of s 2 = 16 seconds.

a. Write the null and alternative hypothesis that will address the goal of the company. Compute the test statistic, and state how you would obtain the p-value.

b. Say the p-value is very large (closer to 1). In a sentence or two explain what you would conclude about the null and alternative hypothesis.

c. Create and interpret a 95% confidence interval for the difference in the two servers population expectations.

d. The 95% confidence interval from part c. contains 0. How does this result relate to your explanation in part b? Explain in a sentence or two.