You work the human resources in your county’s criminal justice department. You have noticed that it seems that probation officers miss more days of work in a year than parole officers. You think they do but you want to be sure that the difference is significant. You collect data on the number of missed days of work and determine that the mean number of missed days for parole officers is 7 and the mean number of missed days for probation officers is 12. The grouped standard deviation is 2. You assume a normal distribution of your variables.

Would you reject the null hypothesis for a:

i. One-tailed .05 test? (5 pts)

ii. Two-tailed .01 test? (5 pts)

*edit: sample size not given in the problem.

David Desreumaux, VP of Human Resources of Maritime Boat Manufacturing (MBM), is reviewing the employee training programs of MBM factories. Based on a recent census of personnel, David knows that the variance of worker training time in New Brunswick is 8, and he wonders if the variance in Nova Scotia is the same number. His staff randomly selected personnel files for 15 workers in Nova Scotia, and determined that their mean training time was 25 hours and that the standard deviation was 4 hours. Assume that worker training time is normally distributed in the population. Using alpha = 0.10, the critical values of chi-square are..

1)

An example of central corporate support costs includes _____.

A) tax planning department

B) human resources department

C) maintenance department

D) company cafeteria

2)

The use of actual cost rates for allocating variable costs of service departments protectsthe user departments from inefficiencies in service departments.

A) TRUE

B) FALSE

3)

The preferred cost driver for allocating central corporate support costs to products is either actual or estimated usage.

A) TRUE

B) FALSE

4)

Joint costs from producing multiple products are allocated to main products and to by-products.

A) TRUE

B) FALSE

5)

When using the step-down method of allocating service department costs, service departments provide support activities to ______.

A) producing departments only

B) producing departments and other service departments

C) service departments only

D) producing departments and corporate central offices only

1.The first stage in human development, ____________________, takes place in the uterine tube when sperm cells encounter a secondary oocyte.

2. The single cell that results when a sperm and an ovum unite is called a _______________

3.Inherited traits determined by genes specifically located in the sex chromosomes are called __________________________ traits.

4.Chemical messengers secreted into the bloodstream by endocrine glands, that initiate a change in a target cell are called ____________________

5.The hormone, produced by the anterior pituitary gland, that stimulates the mammary glands to produce milk is ________________________

6.The hormone, made by the hypothalamus and secreted from the posterior pituitary, that stimulates ejection of milk and contraction of the uterus is __________________

7. The hormone, made by the pancreas, that increases the uptake of glucose into cells, thus lowering the level of glucose in the blood, is ___________________

Advances in genetic technology like genetic and genomic testing and gene editing are transforming human biological sciences, but are creating new ethical dilemmas. Here, we address the implications of direct-to-consumer genetic testing.

**Note--link to NPR story below is now functional
FDA Approves Marketing of Consumer Genetic Tests (NPR, 4/7/17) (Links to an external site https://www.npr.org/sections/health-shots/2017/04/07/522897473/fda-approves-marketing-of-consumer-genetic-tests-for-some-conditions

I had My DNA Picture Taken, With Varying Results (New York Times, 12/30/13) (Links to an external site. http://www.nytimes.com/2013/12/31/science/i-had-my-dna-picture-taken-with-varying-results.html

Read the two articles (links below) and then address the following questions in your post.

Would you be interested in having such a genetic test done? Why or why not? If you have had a consumer DNA test done and would like to share your experiences, you are welcome to do so.

Would you want to know if you were destined to contract an incurable degenerative disease such as Huntington's disease or Alzheimer's later in life? Would the results of such a test cause you to alter your lifestyle?

What concerns (with regard to ethics, privacy, etc.) might arise with the widespread use of such tests?

The CEO of a large corporation asks his Human Resource (HR) director to study absenteeism among its executive-level managers at its head office during the year. A random sample of 30 executive-level managers reveals the following:

              Absenteeism: Sample mean = 7.3 days, Sample standard deviation = 6.2 days

              18 mid-level managers out of the 30 randomly selected mid-level managers cite stress as a cause of absence.

1. Construct a 90% confidence interval estimate for the mean number of absences for mid-level managers during the year.
2. Construct a 98% confidence interval estimate for the population proportion of mid-level managers who cite stress as a cause of absence.
3. What sample size is needed to have 95% confidence in estimating the population mean absenteeism to within ±1.5 days if the population standard deviation is estimated to be 8 days?
4. How many mid-level managers need to be selected to have 99% confidence in estimating population proportion of mid-level managers who cite stress as a cause of absence to within ±0.075 if no previous estimate is available?

4)           Sam and Hannah, own a restaurant in Edison, New Jersey, and want to study the dining characteristics of their customers. They decide to focus on two variables: the amount of money spent by customers and whether customers order dessert. The results from a sample of 61 customers are as follows:

              Amount spent: Sample mean = $45.83, Sample standard deviation = $6.27

              17 out of the randomly selected 61 customers, purchased dessert.

1. Construct a 98% confidence interval estimate for the population mean amount spent per customer in the restaurant.
2. Construct a 90% confidence interval estimate for the population proportion of customers who purchase dessert.

Their rival Jim owns a competing restaurant. He wishes to conduct a similar survey in his restaurant. However, he does not have access to the information that Sam and Hannah have obtained from the survey they conducted. Jim wants to know the following:

3. What sample size is needed to have 99% confidence of estimating the population mean amount spent in his restaurant to within ±$2.60, assuming that the population standard deviation is estimated to be $9?

4. How many customers need to be selected to have 95%confidence of estimating the population proportion of customers who purchase dessert to within±0.04?

A hospital human resource manager wants to investigate the relationship between burnout and nurses being absent from work. The manager collects absence and "psychological burnout" from a random sample of nurses at the hospital. What can the manger conclude with an α of 0.10?

a) What is the appropriate statistic?
---Select one--- (na, Correlation, Slope, Chi-Square)
Compute the statistic selected in a):  

b) Input the appropriate value(s) to make a decision about H₀.
(Hint: Make sure to write down the null and alternative hypotheses to help solve the problem.)
p-value =  ; Decision:  ---Select one--- (Reject H0, Fail to reject H0)

c) Using the SPSS results, compute the corresponding effect size(s) and indicate magnitude(s).
If not appropriate, input and/or select "na" below.
effect size =  ;    ---Select one--- (na, trivial effect, small effect, medium effect, large effect)

d) Make an interpretation based on the results.

a. There is a significant positive relationship between being absent from work and burnout.

b. There is a significant negative relationship between being absent from work and burnout.

c. There is no significant relationship between being absent from work and burnout.

Some researchers claim that herbal supplements such as ginseng or ginkgo biloba enhance human memory.  To test this claim, a researcher selects a sample of n = 25 college students.  Each student is given a ginkgo biloba supplement daily for six weeks and then all the participants are given a standardized memory test.  Scores on the test are normally distributed with μ = 70 and σ = 15.  The sample of n = 25 students had a mean score of M = 75.  Is this sample sufficient to conclude that the herb has a significant effect on memory?  Use a two-tailed test with α = .05.

1. State the Independent and Dependent Variables
2. State the Null Hypothesis in words and symbols.

b State the alternative Hypothesis in words and symbols.

3. Compute the appropriate statistic.
4. What is the decision (Retain or Reject)
5. State the full conclusion in words

Effect

Direction

Size of Effect

Create a research hypothesis about Human Resource Management that would be answered using either a z- or a t- test
(PLEASE TYPE THE ANSWERS)(STATISTICS 500)

1. Introduction: Brief description of the study including the purpose and importance of the research question being asked.

2. What is the null hypothesis? What is the research hypothesis?

3. Participants/Sampling Method: Describe your sampling method. What is your sample size? Who is your population of interest? How representative is the sample of the population under study?

4. Data Analysis: Describe the statistical analysis. What is your variable? What is its level of measurement? What is your alpha level?

5. Results & Discussion: Did you reject the null hypothesis? What information did you use to lead you to your conclusion? Was your p value greater than or less than your alpha? NOTE: You can just make up numbers, but include your made-up p value

You have been recently hired in the human resources department at the company you have always dreamed of working for. At the end of your first day, your manager, I.M. DeBoss, on her way out of the office says to you: “So Mr./Ms. Jones, what things come to mind when you think of the word 'ethics'?" Before you can answer, she asks you if you believe ethics are important for a company and if so why do you feel that way? Not letting up, because she is DeBoss, she then asks you if you think your views on ethics have evolved based on your life experiences or do you believe as suggested in the 60 Minutes piece, “Born good? Babies help unlock the origins of Morality,” that your ethics DNA was established at birth and why?

Just as you are about to respond to her, she says “I am sorry Mr./Ms. Jones but I really have to run but I want to continue our conversation tomorrow.” You are relieved because you will have a night to ponder her questions and wow her with your responses tomorrow. How would you respond to your manager?