In: Operations Management
Summarize the action(s) taken by the FOMC as per its Press Release and the Decisions Regarding Monetary Policy Implementation on March 15th, 2020.
In: Finance
| Sigall and Ostrove (1975) did an experiment to assess whether the physical attractiveness of a defendant on trial for a crime had an effect on the severity of the sentence given in mock jury trials. Each of the participants in this study was randomly assigned to one of the following three treatment groups; every participant received a packet that described a burglary and gave background information about the accused person. The three treatment groups differed in the type of information they were given about the accused person’s appearance. Members of Group 1 were shown a photograph of an attractive person; members of Group 2 were shown a photograph of an unattractive person; members of Group 3 saw no photograph. Some of their results are described here. Each participant was asked to assign a sentence (in years) to the accused person; the researchers predicted that more attractive persons would receive shorter sentences. | |||
| a. | Prior to assessment of the outcome, the researchers did a manipulation check. Members of Groups 1 and 2 rated the attractiveness (on a 1 to 9 scale, with 9 being the most attractive) of the person in the photo. They reported that for the attractive photo, M = 7.53; for the unattractive photo, M = 3.20, F(1, 108) = 184.29. Was this difference statistically significant (using α = .05)? | ||
| b. | What was the effect size for the difference in (2a)? | ||
| c. | Was their attempt to manipulate perceived attractiveness successful? | ||
| d. | Why does the F ratio in (2a) have just df = 1 in the numerator? | ||
| e. | The mean length of sentence given in the three groups was as follows: | ||
| Group 1: Attractive photo, M = 2.80 | |||
| Group 2: Unattractive photo, M = 5.20 | |||
| Group 3: No photo, M = 5.10 | |||
| They did not report a
single overall F comparing all three groups; instead, they
reported selected pairwise comparisons. For Group 1 versus Group 2,
F(1, 108) = 6.60, p < .025. Was this difference statistically significant? If they had done an overall F to assess the significance of differences of means among all three groups, do you think this overall F would have been statistically significant? |
|||
| f. | Was the difference in mean length of sentence in part (2e) in the predicted direction? | ||
| g. | Calculate and interpret an effect-size estimate for this obtained F. | ||
| h. | What additional information would you need about these data to do a Tukey honestly significant difference test to see whether Groups 2 and 3, as well as 1 and 3, differed significantly? | ||
In: Math
6. Financial Statements Analysis extracts historical information
(in this case from 1995—2001), and projects for the future
(2002—2011) to value the firm. What do you feel about the accuracy
of the projection?
7. Why does the current outstanding debt value have to be
subtracted from the enterprise value to get to price per share?
In: Finance
Question 10 (1 point)
Which of the following statements is true about productivity growth?
|
a |
The largest contributor of productivity
growth |
|
b |
The size of the capital stock in the economy explains roughly 70% of productivity growth. More and better plant and equipment make workers more productive. |
|
c |
Education and training have a contribution to productivity growth of 15%, and economies of scale and resource allocation have a combined contribution of 15%. |
|
d |
All of the above. |
|
e |
Only b) and c) |
Question 11 (1 point)
Which of the following statements is true?
|
a |
Investment in human capital is an important means of increasing labor productivity. |
|
b |
Economies of scale are the increases in per-unit production costs that result from increases in output levels. |
|
c |
Improved resource allocation means workers over time have moved from low-productivity employment to high-productivity employment. The long-run movement toward liberalized international trade through international agreements has improved the allocation of resources, increased labor productivity, and expanded real output (both here and abroad). |
|
d |
All of the above. |
|
e |
Only a) and c) |
Question 12 (1 point)
Which of the following statements is true?
|
a |
Productivity growth rate increased significantly in the period of 1995-2010 as compared to the period of 1973-1995. |
|
b |
Economists relate the increase in productivity growth in the period 1995-2010 to the significant wave of new technology coupled with global competition. |
|
c |
The increase in productivity growth is important as real output, real income, and real wages are all positively linked to it. |
|
d |
All of the above. |
|
e |
Only a) and b) |
In: Economics
To what extent do syntax textbooks, which analyze the structure of sentences, illustrate gender bias? A study of this question sampled sentences from 10 texts. One part of the study examined the use of the words "girl," "boy," "man," and "woman." We will call the first two words juvenile and the last two adult. Is the proportion of female references that are juvenile (girl) equal to the proportion of male references that are juvenile (boy)? Here are data from one of the texts:
| Gender | n | X(juvenile) |
| Female | 57 | 49 |
| Male | 132 | 53 |
1) Give a 90% confidence interval for the difference. (Do not use rounded values. Round your final answers to three decimal places.)
=( , )
2) Use a test of significance to examine whether the two proportions are equal. (Use p̂F − p̂M. Round your value for z to two decimal places and round your P-value to four decimal places.)
A) z=
B)P-Value=
In: Statistics and Probability
A manufacturer of automotive gaskets has two plants, A and B. Plant A manufactures 65 % of the gaskets and plant B manufactures 35 %. Because of a batch of faulty material from a company supplying both plants, 3% of the gaskets are of sub-standard quality from plant A and 5% are sub-standard from plant B. Despite your internal quality control procedures, you still had a sub-standard gasket returned from one of your customers. What is the probability it came from plant B? i) Illustrate your answer with an event tree and ii) show how to calculate the value using Bayes Equation. b) Using Bayes Theorem, solve the following two problems: 1. A couple has three children, the eldest of which is a boy. What is the probability that they have three boys? 2. A couple has three children, one of which is a boy. What is the probability that they have three boys?
In: Statistics and Probability
Case Scenario: A 12-year-old boy presents with a blood sugar of 600. He is lethargic, and parents state he has had the flu. He has been fatigued and has lost 15 pounds in the last two weeks. This boy’s history is small for age, lack of focus at times, reoccurring bladder infections for the last six months, states his mouth is dry all the time, is often irritable, and has few interests or friends. The doctors’ notes state he has a diagnosis of autoimmune type 1 diabetes. As this is a new diagnosis, the parents are obviously very upset.
In: Nursing
Situation # 2 A 13-year-old boy likes to steal cookies from a local convenience store.
-Explain how the stealing behavior might have developed in terms of Operant Conditioning. In your answer specify: Operant behavior (Voluntary response), Consequence, Reinforcement (specify Positive or Negative).
Operant behavior
Consequence
Reinforcement (specify Positive or Negative)
- In this situation involving the theft of cookies, explain how the concepts of primary and secondary reinforcers might apply.
- Describe how the stealing behavior might have developed using a Social Cognitive (Observational) Learning model.
- Using the Operant model, how might the stealing behavior be extinguished?
- How might the impact of punishment differ from the extinction you described in Q. 10 (above)? In your answer provide an example of punishment that might be effective in this situation.
- Describe how Latent Learning might explain how the boy knows where to find the cookies in the store.
In: Psychology
1) All living organisms, including bacteria, plants, humans and other animals, are made up of one or more cells. Explain why all living organisms need to have DNA. Include the words genes and proteins in your explanation.
2)Explain how a difference in the sequence of nucleotides in a gene could result in one boy being albino and the other boy having normal skin and hair color.
3)Copy and complete this chart to describe how a person's DNA determines whether he has hemophilia. (Hint: begin by completing the bottom box in the protein column.)
|
Gene in DNA |
Protein |
Characteristic |
|
Normal formation of blood clots prevents excessive bleeding. |
||
|
Hemophilia (excessive bleeding because clots do not form normally because one type of clotting protein is defective) |
4) Explain why a cell needs to replicate its DNA before the cell divides into two daughter cells.
In: Biology