Statistics and probability

Statistics and probability

Daily Test Question Chapter 5

Provide reference website link for textbook:

  1. In your own words, explain why random variables are important to statistics and probability.
  2. What is the difference between a continuous and discrete random variable?
  3. Would you consider the temperature outside a discrete random variable? Why or why not?
  4. Suppose a piggy bank contains 100 coins (25 pennies, 25 dimes, 25 nickels, and 25 quarters). Let the random variable X represent the total value of five randomly selected coins. Is X a discrete or continuous random variable?
  5. What are the properties of a continuous distribution?
  6. What are the properties of a discrete distribution?
  7. Give an example of a discrete and a continuous random variable.
  8. Give examples of three different discrete random variables.
  9. Give examples of three different continuous random variables.
  10. Can you describe a random variable Y that is both discrete and continuous?
  11. Suppose you have a dataset and define the random variable X as the number of students at your university with the same last name. what type of random variable is this?
  12. Give two examples of variable that are not random.
  13. What are the major differences between discrete and continuous random variables?
  14. In each of the following situations, indicate whether the random variable is discrete or continuous:
    1. The number of Twitter followers for each student in your statistic class
    2. The amount of rainfall in 2020 in each U.S. state
    3. The amount of time it takes each student in your statistics class to travel to campus
    4. The number of text message students on a college campus received today
    5. The GPA of the first-year students at your college

Section 5.2: pp. 114-115, problems #1- #9

    1. For discrete random variables, what type of plot would you use to graphically display the probability of distribution? What provides the probability for a specific outcome?

Use the following to answer questions 2-5:

Let’s define an experiment in which a fair coin is tossed three times. Let the random variable X represent the number of times the coin  lands on tails in the three flips.

  1. What is the probability that two tails are observed?
  2. Describe two formulations that you could use to calculate the probability that at least one tail is observed and then solve either.
  3. What is the probability that no tails are observed?
  4. Create a probability histogram that graphically displays the probability distribution of X.
  5. For continuous random variables, what type of plot would you use to graphically display the probability distribution? How is the plot used to find the probability of an event?
  6. When visually examining graphs of continuous distributions, what features of the graph are important to notice? What can we note about the area under the entire graph?
  7. Consider the continuous probability distribution shown in the graph below. What features of the distribution do you observe?
  8. Consider the continuous probability distribution shown in the graph below. What features of the distribution do you observe?
  • Section 5.3: pp. 117-118, problems #1- #10

Use the following to answer questions 1-5:

Assume the distribution of a random variable Y is defined in the table below:

  1. Is the distribution a valid probability model? Explain why or why not.
  2. Does the probability model describe a continuous or discrete random variable?
  3. Compute the central tendency of the probability distribution.
  4. What is the variance of the probability distribution?
  5. What is the standard deviation of the probability distribution?


Use the following to answer 6-10:

Construct your own valid probability model that describes a discrete random variable X. Assume the random variable X can take on five different values. The random variable X should have an expected value of 12.

  1. Fill in the table below to show the values and probabilities for your model.
  2. How do you know that you constructed a valid probability distribution?

8.What is the variance of your probability distribution?

9.What is the standard deviation of your probability distribution?

10.Plot the probability histogram.

Section 5.4: pp. 121, problems #1- #15

  1. Is the geometric distribution discrete or continuous?
  2. Is the Poisson distribution discrete or continuous?
  3. Suppose you flip a coin 10 times and count the number of times the coin lands on heads. Is this a setting that would allow the use of a Poisson distribution?
  4. NetflixTM is a popular streaming service that allows you to watch movies and TV shows for a subscription price. Suppose you count the number of episodes each student in your class watched last night of any show. Would this be a setting appropriate for the Poisson distribution? Explain why or why not.
  5. Give an example of a dataset that could be modeled using a Poisson distribution.
  6. Suppose a couple would like to start having children. The random variable X represents the number of children they have until the first girl. Is this setting for a geometric distribution? Explain why or why not.
  7. Give an example of a dataset that could be modeled using the geometric distribution.

Use the following to answer questions 8-10

We are going to use the Poisson distribution to model the number of customers at a popular fast-food chain restaurant. Suppose the mean number of people at the restaurant is 98 during any given hour.

  1. What is the probability that there will be over 100 customers at the restaurant from p.m. -6 p.m. today?
  2. What is the probability that there will be exactly 10 customers at the restaurant for the hour starting at 1 p.m.?
  3. What is the variance for this distribution?

Use the following to answer questions 11-13.

The University of Maryland has approximately 40,000 students from all over the world. As a new student on campus, you are interested in meeting students from your home town of Paris, France. Suppose that when you meet someone, the probability that they are from Paris is .04. Use the geometric distribution to answer the questions below.

  1. What is the probability of success, p, and the probability of failure, q, for this distribution?
  2. What is the probability you have to ask random students on campus where they are from before you find a student who is from Paris?
  3. What is the mean and variance of this distribution?
  4. Stephen Curry, a member of the Golden State Warriors professional basketball has one of the three best free throw shooting percentages of all time. Using the fact that his free throw shooting percent is 90.56%, calculate the probability that it takes more than 10 shots before Curry would miss a shot.
  5. Babe Ruth, known as The Sultan of Swat, is often referred to as the greatest baseball player of all time. Ruth was known for hitting home runs. He had a career home run percent of 8.5%. Design an appropriate probability model, and then calculate (a) the expected number of at bats to hit a homerun and (b) the probability that Ruth goes more than 15 at bats in a row without a home run.





strategic management

Benefits and risks associated with strategic management

Essay Questions:

  1. Discuss in scholarly detail the benefits and risks associated with strategic management.
  2. Discuss in scholarly detail the purpose of a business strategy and expand on these concepts discussing a differentiation business strategy. Based on these strategies, how could an organization be a late mover and yet succeed with a strategy of differentiation and why?
  3. Explain the newest trends in mission components and also differentiate between company philosophy and public image and why organizations should consider either or both in its overall mission.
  4. Discuss in scholarly detail the defining principles and the implementing principles of the corporate social justice approach. In addition, what are some pros and cons associated with these social justice principles and why?
  5. Discuss in scholarly detail the necessary steps a firm must take when it attempts to incorporate interests of various stakeholders.


Responses to each question should be fully answered and each question explored, must be 400 words per question not including references, and should be supported with scholarly research from outside internet sources, excluding wiki sources. Remember that well-written responses do not need to be excessively wordy. In your analysis of the concepts, you may include applicable experience. Paraphrasing and direct quotes should be cited as to source. Must be in APA format.

quality improvement

Continuous quality improvement

The purpose of this assignment is to discuss the purpose and use of the continuous quality improvement (CQI) process.

In a 1,000-1,250-word paper, address the following:

Explain the need for CQI in health care.

Describe methods of CQI used in health care.

Describe factors that have an effect on the CQI process.

Describe the overall impact that the CQI process has on staff.

Describe the overall impact that CQI initiatives have on patient outcomes.


This assignment requires a minimum of three scholarly resources.

Prepare this assignment according to the guidelines found in the APA Style Guide, located in the Student Success Center.


An explanation of why CQI is needed in health care is thorough.

A description of methods of CQI used in health care is thorough.

A description of the factors that affect the CQI process is thorough.

A description of the overall impact of the CQI process on staff is thorough.( Impact of CQI Process on Staff)

A description of the overall impact that CQI initiatives have on patient outcomes is thorough.

Communicates reason for writing and demonstrates awareness of audience.

With the ever growing need for patient safety and


Americans with Disabilities Act (ADA)

Discussion question

Under the Americans with Disabilities Act (ADA), reasonable accommodations must be provided to allow a qualified employee to perform the essential functions of a job. These accommodations could range from reserved parking, to a specific software program, to allowing service animals in the workplace.

Consider a situation in which a person with a physical disability is hired in a car manufacturing company. As his manager, how would you determine a reasonable and appropriate accommodation for your new hire?

Consider if the new hire requested an inappropriate accommodation, how would you respond? What are 2 resources you could use to support your effort? Discuss your responses and provide links to the resources.


Respond to the following in a minimum of 175 words:

A Case Study in Glocalization

A Case Study in Glocalization

D1 Case Study: McDonald’s: A Case Study in Glocalization


When preparing for your discussion post on this case, it is recommended that you read through it several times.

  • Read through it the first time to familiarize yourself with the prompt.
  • On the second reading, consider your assigned role in the situation, and let that guide your perspective.
  • Look deeper at the details: facts, problems, organizational goals, objectives, policies, strategies.
  • Next, consider the concepts, theories, tools and research you need to use to address the issues presented.
  • Then, complete any research, analysis, calculations, or graphing to support your decisions and make recommendations.


McDonald’s restaurants are located around the globe and are among the leading purveyors of fast food. This case study examines McDonald’s globalization strategies, focusing on six factors. As you read, consider the cultural differences that McDonald’s has to consider as they market their product in various countries.


Read McDonald’s: A Case Study in Glocalization

 (Links to an external site.)

and review the module resources. Answer the questions about the case study. Make sure to support your answers with relevant scholarly resources.


  1. In the discussion forum, answer the following:
    1. Analyze how McDonald’s has adapted their marketing and product positioning to address cultural differences they encounter across the globe. Why have their adaptations worked?
  2. In response to your peers, consider their analysis of McDonald’s adaptations and propose an additional or alternative adaptation that would take cultural differences into consideration when marketing in other countries.

Support your answers using relevant, scholarly resources and citations in APA format.

Responses should comprise 200-600 words.


Crawford, A., Humphries, S.A., & Geddy, M.M. (2015). McDonald’s: A case study in Glocalization

 (Links to an external site.)

. Journal of Global Business Issues, 9 (1), 11-17.


Consult the Discussion Posting Guide for information about writing your discussion posts. It is recommended that you write your post in a document first. Check your work and correct any spelling or grammatical errors. When you are ready to make your initial post, click on the “Reply”. Then copy/paste the text into the message field, and click “Post Reply.”

To respond to a peer, click “Reply” beneath her or his post and continue as with an initial post.


This discussion will be graded using the discussion board rubric. Please review this rubric, located on the Rubrics page within the Start Here module of the course, prior to beginning your work to ensure your participation meets the criteria in place for this discussion. All discussions combined are worth 20% of your final course grade.

Shell Case Fabricators

Case Study: Shell Case Fabricators


This assignment is a case study. You will be presented with information concerning a company facing a situation that requires at least one decision to be made. Read the case and using the course material and your additional research, write a short paper that briefly identifies the issues and proposes a solution that includes a justification for your choice.

This assignment considers the information provided in the Shell Case Fabricators (SCF) case. It can be found at the end of Chapter 12 of your text in the case section after the blue pages. Additional questions have been added, so please use the text only for the case material and not the assignment. To complete the assignment, follow the steps listed below:

  • Read the Shell Case Fabricators case at the end of Chapter 12.
  • Create a paper responding to the following questions (ignore the questions in the textbook and only answer these questions):
    • Consider the proposal. ShouldSCF accept or reject ACL’s request? If you were the project manager, which option would you select? What risks are involved with your choice and with ACL’s request?
    • How shouldSCF negotiate with ACL? How can SCF and ACL develop a positive, long-range relationship? Give specifics.
    • Would it be possible to outsource some of the project elements, and would it be ethical as this is already a subcontracted project? What other options are available that you could consider?
    • If you were to look for another solution, what would you include in your request for proposals (RFP)?

Write a three page paper in Word format. Use the American Psychological Association (APA) style (most current edition) for writing your assignment.

Compose your work in a .doc or .docx file type using a word processor (such as Microsoft Word, etc.) and save it frequently to your computer. For those assignments that are not written essays and require uploading images or PowerPoint slides, please follow uploading guidelines provided by your instructor.

Check your work and correct any spelling or grammatical errors. When you are ready to submit your work, click “Upload Submission.”  Enter the submission title and then click on “Select a file to upload.” Browse your computer, and select your file. Click “Open” and verify the correct file name has appeared next to Submission File. Click on “Continue.”  Confirm submission is correct and then click on “Accept Submission & Save.”


This course has Turnitin fully integrated into the course dropbox.  This means that you should only submit your assignments to the dropbox below.  Please do not submit your assignment directly to  

Once submitted, your assignment will be evaluated by Turnitin® automatically.  You will be able to view an Originality Report within minutes of your first submission that will show how much of your work has been identified as similar to other sources such as websites, textbooks, or other student papers.  Use your Originality Report as a learning tool to identify areas of your assignment that you may not have cited appropriately.  You may resubmit your assignment through this dropbox as many times as you need to check to see if you have made improvementsuntil the due date of the assignment. However, once you have made your first submission, you will need to wait 24 hours after each subsequent submission to receive a new Originality Report.  Plan accordingly as you draft your assignment.  Once the due date has passed, your assignment submission will be considered final.


This assignment will be graded using the SBT M8A1 Case Analysis Rubric. Please review this rubric prior to beginning your work. You can also access the rubric on the Course Rubrics page within the Start Here module. All case studies, together, make up 15% of the total course grade.

Turkle and McGonigal different perspectives about technology

Turkle and McGonigal different perspectives about technology


Turkle and McGonigal

As you may have noticed, Turkle and McGonigal have different perspectives about technology.  For this assignment, you will draft a short research supported argumentative or persuasive draft, using the provided articles and videos featuring McGonigal and Turkle.

Address the following: McGonigal strongly feels that video games are not only positive but can be used to better situations. Turkle has many concerns about technology and its impact on our lives, identities, and emotional well being, but she has a complex relationship with it and has studied its impact for many years.

Questions you may consider: Do their ideas coincide with each other? Do their ideas conflict with each other? How do their personalities and experiences affect their ideas and how they present them? Do their beliefs raise concerns? Is there middle ground in their approaches? Is one person’s viewpoint or argument more compelling than the others? Be aware of your own bias too. Are you generalizing based on stereotypes? Are you considering everything the speaker/author is saying or are you only choosing parts to make them fit your argument? It is okay to raise an issue and not solve it. Noting that something is an issue and needs further research is acceptable in research writing

action research project

action research project

Consider the problem you have decided on for your action research project and explain your motivation for addressing this problem in terms of why it is significant to the organization.

Include discussion of how addressing the problem could produce positive results for the business, its employees, and customers, and address the solutions from a Christian worldview perspective.

In response to peers, further discuss the impact of this problem and its resolution as it pertains to the organization at large.