A medical researcher wants to begin a clinical trial that
involves systolic blood pressure (SBP) and cadmium (Cd) levels.
However, before starting the study, the researcher wants to confirm
that higher SBP is associated with higher Cd levels. Below are the
SBP and Cd measurements for a sample a participants. What can the
researcher conclude with an α of 0.05?
| SBP | Cd |
|---|---|
| 126 127 179 182 113 169 115 161 148 140 160 |
55.9 55.7 55.7 55.5 55.9 55.8 55.8 55.5 55.7 55.8 55.6 |
a) What is the appropriate statistic?
---Select--- na Correlation Slope Chi-Square
Compute the statistic selected above:
b) Compute the appropriate test statistic(s) to
make a decision about H0.
(Hint: Make sure to write down the null and alternative hypotheses
to help solve the problem.)
critical value = ; test statistic =
Decision: ---Select--- Reject H0 Fail to reject H0
c) Compute the corresponding effect size(s) and
indicate magnitude(s).
If not appropriate, input and/or select "na" below.
effect size = ; ---Select--- na trivial
effect small effect medium effect large effect
d) Make an interpretation based on the
results.
A.There was a significant positive relationship between systolic blood pressure and cadmium levels.
B.There was a significant negative relationship between systolic blood pressure and cadmium levels.
C. There was no significant relationship between systolic blood pressure and cadmium levels.
In: Math
Write a C++ program to score the paper-rock-scissor game. Each of two players (player1 and player2) input a character which could be either ‘P’, ‘R’, or ‘S’ (in uppercase or lowercase). For any other input character should display a message “Invalid input”. The program then announces who is the winner as well as the basis for determining the winner which could be one of the following: “Paper covers rock”, “Rock breaks scissors”, “Scissors cut paper”, or “Nobody wins”. (Use switch statement)
In: Computer Science
Read the following quote attributed to Sun Tzu:
“When the enemy is relaxed, make them toil. When full, starve them. When settled, make them move.”
In approximately 500 words, explain the meaning of these three sentences in terms of change and strategy.
In: Operations Management
Chapter I. Ten Principles of Economics
In: Economics
The distribution of income is likely to be more UNEQUAL in a capitalist (market) economy compared to a socialist (command) economy. Explain why this is true. (Remember what determines the distribution of income in each type of economic system.)
In: Psychology
Mention at least 3 significant changes that came about with the discovery or manipulation of fire.
Changes - what was the change "cooking"
Description - explain how it was manifested, "how it was done"
Reflection - how do you think this changed humanity in general
List and describe the changes that emerged after the discovery and mastery of the use of fire.
|
Discovering Fire: Big changes in humanity |
||
|
Changes |
Description |
Reflection |
In: Psychology
A few years ago, Anheuser-Busch Inc. created a new division dedicated to marketing to Hispanics and announced it would boost its ad spending in Hispanic media by two-thirds to more than $60 million, while Miller Brewing Co. signed a $100 million, three-year ad package with Spanish-language broadcaster Univision. But Hispanic activists immediately raised public health concerns about the beer ad blitz on the grounds that it targets a population that skews young and is disproportionately likely to abuse alcohol. Surveys of Hispanic youth show that they are much more likely to drink alcohol, get drunk, and engage in binge drinking than their white or black peers. A senior executive at Anheuser-Busch responded, “We would disagree with anyone who suggests beer billboards increase abuse among Latino or other minority communities. It would be poor business for us in today’s world to ignore what is the fastest-growing segment of our population.” Manufacturers of alcohol and tobacco products have been criticized for targeting unwholesome products to certain segments of the market—the aged, ethnic minorities, the disabled, and others.
1) Do you view this as a problem?
2) Should a firm use different criteria in targeting such groups?
3) Should the government oversee and control such marketing activities?
In: Operations Management
In a short paper describe the four different types of analytics needed to create insights and make decisions from big data. should be 2-3-pages in length and written in Word
In: Operations Management
In: Economics
This is A PYTHON Question.
Developing a machine learning system for a given dataset.
Dataset
Diabetes dataset - https://www.kaggle.com/uciml/pima-indians-diabetes-database
Algorithms
Either one of the following:
1. K-Nearest Neighbors
2. Support Vector Machines
3. Neural Networks
Notes:
Explain your choice of algorithms and analyze the models developed.
Show what patterns/insights can be extracted from your chosen dataset and the selected algorithms.
In: Computer Science
Cheryl Montoya picked up the phone and called her boss, Wes Chan, the vice president of marketing at Piedmont Fasteners Corporation: “Wes, I’m not sure how to go about answering the questions that came up at the meeting with the president yesterday.”
"What's the problem?"
“The president wanted to know the break-even point for each of the company’s products, but I am having trouble figuring them out.”
“I’m sure you can handle it, Cheryl. And, by the way, I need your analysis on my desk tomorrow morning at 8:00 sharp in time for the follow-up meeting at 9:00.”
Piedmont Fasteners Corporation makes three different clothing fasteners in its manufacturing facility in North Carolina. Data concerning these products appear below:
| Velcro | Metal | Nylon | |||||||
| Normal annual sales volume | 112,000 | 212,000 | 287,000 | ||||||
| Unit selling price | $ | 1.70 | $ | 2.00 | $ | 1.10 | |||
| Variable expense per unit | $ | 1.00 | $ | 1.40 | $ | .70 | |||
Total fixed expenses are $257,000 per year.
All three products are sold in highly competitive markets, so the company is unable to raise its prices without losing unacceptable numbers of customers.
The company has an extremely effective lean production system, so there are no beginning or ending work in process or finished goods inventories.
Required:
1. What is the company’s overall break-even point in dollar sales? (Round CM ratio to 4 decimal places and final answer to the nearest whole dollar.)
2. Of the total fixed expenses of $257,000, $17,500 could be avoided if the Velcro product is dropped, $103,200 if the Metal product is dropped, and $77,600 if the Nylon product is dropped. The remaining fixed expenses of $58,700 consist of common fixed expenses such as administrative salaries and rent on the factory building that could be avoided only by going out of business entirely.
a. What is the break-even point in unit sales for each product? (Do not round intermediate calculations.)
b. If the company sells exactly the break-even quantity of each product, what will be the overall profit of the company? (Do not round intermediate calculations.)
In: Accounting
In: Psychology
What are possible reasons for the differences between the measured and calculated values of centripetal force?
In: Physics
CHAPTER 9 CASE STUDY
GOLD STAR SHOES LTD.
Developing a Training Program
Gold Star Shoes Ltd. is a medium-sized manufacturer of leather and vinyl shoes located in Wilmington, Ontario. It was started in 1973 and currently employs about 500 persons in its Ontario plant and some 200 more in offices and warehouses throughout Canada.
“How can we develop a training program that will have a significant impact on our manufacturing staff?”
Jane Reynolds, special assistant in the personnel department, faced that challenge from a vice president of the largest division of Gold Star Shoes, manufacturing. Training had never been a high priority at Gold Star Shoes, having always been viewed as an expense item, not an investment. If skilled workers were needed, Gold Star Shoes preferred to raid other companies to save training costs. If raiding was not successful, a quick on-the-job training was provided by more experienced employees—limited to essential skills, since there was little incentive for the employees to be more involved.
However, when the vice president attended a convention of shoe manufacturers, he was surprised to learn how cost-efficient some other shoe producers were, especially in Italy and France. Although wages there were similar to the wages paid in Canada, the productivity of the Italian and French workers was significantly higher. The VP found that the Italian and French companies invested heavily in training, allowing them to use cross-trained, flexible staff.
The VP asked Reynolds to develop a training plan, suitable to improve the overall skill level of Gold Star Shoes’ employees. Reynolds vaguely remembered something about training from her few courses in human resource management quite some time ago, but she felt that it was not sufficient to develop a training program on her own. Besides, she knew nothing about the skill requirements in the manufacturing division.
She decided to ask Russ Summers, manager of the cutting operation, to chair a committee of first-line supervisors to assist her in the program development.
DISCUSSION QUESTIONS
|
1. |
You are Russ. Describe the steps you would recommend that Reynolds go through before actually designing the content of the training. |
|
2. |
What training methods would you suggest be used to train production workers? (First you might ask: What determines the methods?) |
|
3. |
How would you evaluate the training program to determine how effective it was? (What criteria would you use?) |
|
4. |
Do you think the first-line supervisors are the appropriate people to design the training program? Whom else would you add, if anyone, to this group? |
In: Operations Management
Can you draw out the mechanisms of 1-butanol, 2-butanol, and 2-methyl-2-propanol with the HCl ZnCl2 reagent? I need full structures.
In: Chemistry