In: Economics
Reflection topic: Netiquette, peer assessment, and feedback
The Learning Journal entry should be a minimum of 400 words and not
more than 750 words. Use APA citations and references if you use
ideas from the readings or other sources.
In: Operations Management
Reflection topic: Netiquette, peer assessment, and feedback
The Learning Journal entry should be a minimum of 400 words and not
more than 750 words. Use APA citations and references if you use
ideas from the readings or other sources.
In: Psychology
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)
In: Statistics and Probability
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.
In: Economics
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.
In: Operations Management
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.
In: Biology
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:
Assume that their work allows them to scale up or down their hours.
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.
In: Economics
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.
In: Mechanical Engineering
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].
In: Biology