Questions
there is an old wives tale that women who eat chocolate during pregnancy are more likely...

there is an old wives tale that women who eat chocolate during pregnancy are more likely to have happy babies. a pregnancy magazine wants to test this claim, and it gathers 100 randomly selected pregnant women for its study. half of the women sampled agreed to eat chocolate at least once a day, while the other half agree to forego chocolate for the duration of their pregnancies. a year later, the ladies complete a survery regarding the overall happiness of their babies. the results are given in the following table. at the 0.01 level of significance, test the old wives' tale.   

happy babies unhappy babies
with chocolate 24 26
without chocolate 22 28

state the null and alternative hypothesis

determine which distrubition to use for the test statistic, and state level of significance

gather date and calculate the necessary sample statistics

and draw a conclusion and interpret the decision

In: Statistics and Probability

In this assignment you will apply your economics knowledge to explain and interpret a recently published...

In this assignment you will apply your economics knowledge to explain and interpret a recently published economics article. You will research and select one article published within the past year that discusses an economics issue from the list provided below and explain the economics of the article. The article may be obtained from a major business or economics journal, magazine or newspaper (The Economist, Wall Street Journal, Businessweek, Times, Fortune, etc.). Using your own words as much as possible, you will explain the main points being made by the article’s author(s), the economic principles used by the author to support his/her argument, and the implications of the story. To do this, you will be applying some of the key economics concepts you have learned in Chapters 1 - 11 of your textbook, to explain the meaning and relevance of the economics story to individuals, firms and/or industry.

In: Economics

Select an instrument that falls in the scope of personality testing (See the link to the...

Select an instrument that falls in the scope of personality testing (See the link to the Wikipedia page that lists psychological tests)

For the record, I include clinical and counseling personality tests as well as interest and career assessment in this realm. Pure cognitive assessments (IQ testing and aptitude) are NOT included. Please do not select non-professionally developed tests (i.e. those featured in popular magazine or websites.)

Describe the history of the test’s development. Research the instrument’s validity and reliability (a good explanation of these concepts is featured at this website:

http://www.socialresearchmethods.net/kb/relandval.php (Links to an external site.)Links to an external site.

there are others out there too…) according to the individual(s) or institution that created it. Finally, look for independent (i.e. not affiliated financially or otherwise with the test developers) analysis/evaluation of the test’s strengths and weaknesses.

Provide your own concluding thoughts about the instrument.

In: Psychology

The article reviews in this course provide you an opportunity to critically assess books and articles...

The article reviews in this course provide you an opportunity to critically assess books and articles and, in doing so, learn to compose a stronger and better researched paper or article that commands a greater influence with the chosen audience. Each article review should be 1-2 pages. Your review is graded on completeness of the exercise. Professionalism, grammar, and spelling will also be considered as criteria for grading.

In your article review:

  • Select any topic discussed within the week’s materials
  • Select an article from a reputable online source (for example, Time Magazine, The Economist, the Harvard Business Review, the Journal of Business Ethics, etc.) or book
  • Briefly summarize the article, including identifying the author’s thesis statement (the central point or message of the article)
  • Critically assess the validity of the article, including identifying those assertions that are ably supported and those which appear to be an opinion of the author without credible research or documentation

In: Operations Management

The following data show the brand, price ($), and the overall score for six stereo headphones...

The following data show the brand, price ($), and the overall score for six stereo headphones that were tested by a certain magazine. The overall score is based on sound quality and effectiveness of ambient noise reduction. Scores range from 0 (lowest) to 100 (highest). The estimated regression equation for these data is

ŷ = 23.194 + 0.318x,

where x = price ($) and y = overall score.

Brand Price ($) Score
A 180 76
B 150 71
C 95 61
D 70 58
E 70 38
F 35 26

(a) Compute SST, SSR, and SSE. (Round your answers to three decimal places.)

SST =  

SSR =

SSE =

(b) Compute the coefficient of determination r2.  (Round your answer to three decimal places.)

r2 =

(c) What is the value of the sample correlation coefficient? (Round your answer to three decimal places.)

In: Statistics and Probability

You may need to use the appropriate appendix table to answer this question. According to Money...

You may need to use the appropriate appendix table to answer this question.

According to Money magazine, Maryland had the highest median annual household income of any state in 2018 at $75,847.† Assume that annual household income in Maryland follows a normal distribution with a median of $75,847 and standard deviation of $33,800.

(a)

What is the probability that a household in Maryland has an annual income of $110,000 or more? (Round your answer to four decimal places.)

(b)

What is the probability that a household in Maryland has an annual income of $50,000 or less? (Round your answer to four decimal places.)

(c)

What is the probability that a household in Maryland has an annual income between $60,000 and $70,000? (Round your answer to four decimal places.)

(d)

What is the annual income (in $) of a household in the eighty-sixth percentile of annual household income in Maryland? (Round your answer to the nearest cent.)

$  

In: Statistics and Probability

You are to read and review/critique a scholarly journal article on a topic in child psychology/child...

You are to read and review/critique a scholarly journal article on a topic in child psychology/child development "GENDER" The article must be primary research(i.e., not a literature review, review article itself, magazine/newspaper, blog, etc.) The appropriateness of the article, written expression and reflective critique will be assessed. Using the link below

https://hal.archives-ouvertes.fr/hal-00513341/document

At least a page worth's and should be in an ESSAY FORMAT.

Suggested questions to consider:

Was there a large enough sample?

What research model did they use?

What would you have used?

Is this research valid?

It is truly testing what it is meant to be testing?

What did the authors conclude?

Do you agree with their conclusions?

Is this research useful to clinicians?

What did you think of this journal article?

What new learning can you take from this article that applies to your own life?

In: Psychology

You are to read and review/critique a scholarly journal article on a topic in child psychology/child...

You are to read and review/critique a scholarly journal article on a topic in child psychology/child development "GENDER" The article must be primary research(i.e., not a literature review, review article itself, magazine/newspaper, blog, etc.) The appropriateness of the article, written expression and reflective critique will be assessed. Using the link below

https://hal.archives-ouvertes.fr/hal-00513341/document

At least a page worth's and should be in an ESSAY FORMAT.

Suggested questions to consider:

Was there a large enough sample?

What research model did they use?

What would you have used?

Is this research valid?

It is truly testing what it is meant to be testing?

What did the authors conclude?

Do you agree with their conclusions?

Is this research useful to clinicians?

What did you think of this journal article?

What new learning can you take from this article that applies to your own life?

In: Psychology

Your grandparents have been left a substantial amount of money and want to invest in a...

Your grandparents have been left a substantial amount of money and want to invest in a company. Your grandfather trusts you to make a recommendation, but he also wants to see the reasoning behind your choice. You have an idea of which company to choose and you decide to prepare 3 sets of documents for your grandparents to consider: business analysis, combined income and cash flow statement, and trend analysis. Business Analysis Select a public company that trades on either the NYSE or the NASDAQ. Perform a business analysis (both external and internal) for your company using the most recent information from various sources. Possible sources include the following: Annual report or form 10-K Magazine or newspaper articles Company Web sites Government information Industry information Rating agencies Analyst reports Internet articles.

In: Finance

1) Describe the effect of hypovolemic shock on the blood vessels and the heart. 2) Atherosclerosis...

1) Describe the effect of hypovolemic shock on the blood vessels and the heart.

2) Atherosclerosis is a progressive disease of blood vessels that is responsible for millions of deaths each year. Describe the disease process, noting the involvement of specific cell/tissue types and molecules.

3) A woman in her early 50s appeared at a walk-in clinic, complaining of aching pain in her right leg following a fall. Visual examination revealed that the medial aspect of that leg was red and swollen. A diagnosis of phlebitis was made. What is phlebitis, and what more serious condition may result if proper healing does not occur?

4) For each of the following situations, describe the anticipated effect on blood pressure and the physiological basis of the response: (1) a high-salt diet, (2) a blow on the head that damages (disables) the vasomotor center, (3) an attack by a mugger, and (4) a hypothalamic tumor resulting in excess ADH production.

5) Mrs. Gray, a 50-year-old mother of seven children, is complaining of dull, aching pains in her legs. She reports that they have been getting progressively worse since the birth of her last child. During her physical examination, numerous varicosities are seen in both legs. How are varicosities recognized? What veins are most likely involved? What pathologic changes have occurred in these veins, and what is the most likely cause in this patient's case?

6) Mr. Wilson is a 45-year-old stockbroker with essential hypertension. He is African American, obese, and he smokes 2-3 packs of cigarettes daily. What risk factors for hypertension are typified by Mr. Wilson? What steps should be taken to treat Mr. Wilson, and what lifestyle changes should he make? What complications are likely if corrective steps are not taken?

7) A pregnant patient comes into a clinic and asks about a small painless dark compressible bulge that is becoming more apparent on her leg. What is it and what caused it?

8) At the battle of Shiloh in the American Civil War, Confederate General A. S. Johnston was killed when he was shot in the thigh. Witnesses reported that he bled to death almost before he realized that he was wounded. Which blood vessel was most likely to have been injured? Why is a tourniquet usually ineffective in stopping the bleeding from this wound?

9) A patient lost a lot of blood during surgery and his blood pressure dropped from 120/80 to 90/50. Describe how the kidneys respond to this change in blood pressure.

10) A patient has an 80% blockage of his left anterior descending coronary artery. Describe what occurs in terms of myocardial oxygen supply and demand if his sympathetic nervous system is stimulated.

In: Anatomy and Physiology