David Anderson has been working as a lecturer at Michigan State University for the last three years. He teaches two large sections of introductory accounting every semester. While he uses the same lecture notes in both sections, his students in the first section outperform those in the second section. He believes that students in the first section not only tend to get higher scores, they also tend to have lower variability in scores. David decides to carry out a formal test to validate his hunch regarding the difference in average scores. In a random sample of 22 students in the first section, he computes a mean and a standard deviation of 84.4 and 12.8, respectively. In the second section, a random sample of 25 students results in a mean of 81.9 and a standard deviation of 1.22. Use Table 2. Sample 1 consists of students in the first section and Sample 2 represents students in the second section. a. Construct the null and the alternative hypotheses to test David’s hunch. H0: μ1 − μ2 = 0; HA: μ1 − μ2 ≠ 0 H0: μ1 − μ2 ≥ 0; HA: μ1 − μ2 < 0 H0: μ1 − μ2 ≤ 0; HA: μ1 − μ2 > 0 b-1. Calculate the value of the test statistic. (Round all intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) Test statistic b-2. What assumption regarding the population variances is used to conduct the test? Known population standard deviations. Unknown population standard deviations that are equal Unknown population standard deviations that are not equal c. Implement the test at α = 0.05 using the critical value approach. Reject H0; there is evidence that scores are higher in the first section. Reject H0; there is no evidence that scores are higher in the first section. Do not reject H0; there is evidence that scores are higher in the first section. Do not reject H0; there is no evidence that scores are higher in the first section.

There are many ways to decide how to divide advertising groups. Provide a list of three different methods. If you had a product such as a beach ball, what considerations would you make when determining how you were going to divide your ad groups? Please explain in detail.

The partial pressure of oxygen in the lung alveoli is a bit lower than in ambient air, being about 100 mm of mercury, or 0.13 Atm (it is lower than the partial pressure in air mainly because oxygen is continually taken up by the alveolar capillaries and carbon dioxide is continually released into the alveoli).  In cell-free blood plasma (or a saline solution formulated to match key characteristics of blood plasma), which lacks red blood cells and therefore lacks hemoglobin, the concentration of oxygen will equilibrate at 37° C at about 0.3 ml O₂/100 ml plasma. For whole blood (with hemoglobin), however, the O₂ concentration is around 20 ml O₂/100 ml whole blood.

By what factor does the presence of hemoglobin increase the oxygen content of blood?

B.  Given the above, imagine that you are an emergency room physician treating a patient who lost a quarter of his blood in an accident. A paramedic replaced this lost blood with saline solution to keep his blood pressure up. The saline solution contains no hemoglobin since it contains no red blood cells. The patient is short of breath and oxygen levels in his blood are dangerously low. If for some reason you must choose between administering pure (100%) oxygen or giving a transfusion of whole blood to restore the red blood cell count, which would you expect to be more helpful? Address this decision by answering the questions below. Show your work and be as quantitatively explicit as possible.

1. Under normal conditions, what percentage of blood oxygen content is accounted for by oxygen dissolved in the plasma and what percentage is bound to hemoglobin? By how much do these percentages change after the patient has a quarter of his blood volume replaced with saline solution?
2. a) By what percentage could total blood oxygen content be increased by delivering pure (100%) oxygen instead of allowing the patient to simply breathe ambient air? Assume that Henry’s Law applies.

b) One obviously can’t deliver oxygen at a concentration higher than 100%, but how else might the partial pressure of the oxygen being delivered be modified to increase the amount diffusing into the blood?

3. By what percentage could blood oxygen content be increased by transfusing whole blood to restore the red blood cell count? Relative to delivering pure oxygen, is this a more promising or less promising approach for restoring normal blood oxygen levels? Explain.

What is a neurotransmitter. What is their function. Name the 6 most common neurotransmitters and their function. Explain in detail.

What is the greater omentum? where is it and what does it do?please explain human anatomy in detail?

You have a bag of marbles. Your bag contains 75 marbles. You only want the red marbles. You know that 30 of the marbles in the bag are red. You randomly select two marbles from the bag and set them aside without looking at them. Let X represent the number of red marbles removed. (hint. This is without replacement.)

a) find the probability mass function (i.e. probability distribution) for the number of red marbles selected.

b) find the expected number of red marbles selected.

c) what is the probability fewer than two red marbles are removed from the bag?

It is distressing to see how many people are willing to use inflammatory, derogatory, and unnecessarily hash statements to the point that the phrase “Internet troll” has been given to describe people with such behaviors. What are your feelings about this behavior, your perception of its impact and consequences, and what action, if any, that should be take to stop such behaviors. Explain your rationale.

What piqued your curiosity about high deductible health plan? Explain in 1 paragraph

What is your understanding about the term ‘Enterprise Cloud Services’? Explain the meaning of word Enterprise and Cloud Services and how do they fit together? You can explain the answer in terms of AWS concepts.

1.       An obstruction in blood flow to the kidneys would result in

2. Why do you need parietal cells in your stomach to produce red blood cells?

A.The stomach is needed for nutrition, and you need amino acids and iron to make red blood cells.

B.Iron (Fe2+) is absorbed in the stomach by parietal cells

C.Parietal cells secrete intrinsic factor, which is necessary to absorb vitamin B12 in the small intestine.

D.Parietal cells secrete intrinsic factor that binds Fe2+, allowing it to be absorbed in the small intestine.

3.   What is true about a person with a Rh- blood type?