_{please answer without plagirism}

• Scientists believe that the human lifespan is 120. What is the difference between life span and life expectancy? Do you think living to 120 is a realistic expectation? Why or why not?
• "Blue Zones" refer to areas around the world where people live measurably longer lives than others. What have scientists learned from these Blue Zones?
  • What do these centenarians generally have in common?  
  • Do you think you could adopt a similar lifestyle? Why or why not?
• Why do scientists believe that restricting your calorie intake will help you live longer? Would you be willing to use a calorie restricted diet, or an intermittent fasting regimen, if it assured that you would live longer? Why or why not?  
• When it comes to food choices, many older adults have the philosophy of "I am going to die anyway, why not enjoy the foods I want." What are your thoughts on this? Do you share this philosophy?  

20. 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 = 28 college students. Each student is given a ginkgo biloba supplement daily for 6 weeks and then all of the participants are given a standardized memory test. Scores on the standardized test are μ = 80 and standard deviation of 15. The sample of 28 students had a mean score of M = 85. (8 points)
    1. Do the data indicate a significant effect of the herb on memory? Use a two-tailed test with α = 0.05. (Show all steps.)
    2. Compute Cohen's d to measure the size of the effect IF it exists.
    3. Write a sentence describing the outcome of the hypothesis test as it would appear in a research report.

You are the lead human–computer interaction (HCI) engineer on a major design project for an organization of your choice. Employees or customers will use this new system and user interface (UI) design to perform data entry for the organization. The UI will need to provide the required input and output to characterize the type of data collected by the organization. Choose an organization, such as a business, nonprofit group, government, or another organization. Provide a description of your chosen organization, including the following: Name of the organization Business type Size of the organization Planned users for the interface Type of data that must be captured The use of the data Part of your job is to elicit and define the UI requirements for this new design. Write a neatly-formatted report that includes the following: Title page Report of 3–5 pages consisting of the following: Introduction to the contents of the report Description of the organization, as detailed above Identification of the following elements that must be included in this UI design for the organization: Fields you expect to see in this UI screen design (e.g., menus, data entry screens, boxes, help, fields, drop-down menus) List of requirements that will ensure that this interface design can easily capture data input in multiple languages Explanation of interface alternatives that will be needed for different language orientations (e.g., different characters for right and left) Effective conclusion.

Lester Hollar is vice president for human resources for a large manufacturing company. In recent years, he has noticed an increase in absenteeism that he thinks is related to the general health of the employees. Four years ago, in an attempt to improve the situation, he began a fitness program in which employees exercise during their lunch hour. To evaluate the program, he selected a random sample of eight participants and found the number of days each was absent in the six months before the exercise program began and in the six months following the exercise program. Below are the results.

  Click here for the Excel Data File

At the 0.025 significance level, can he conclude that the number of absences has declined? Estimate the p-value.

1. State the decision rule for 0.025 significance level. (Round your answer to 3 decimal places.)

2. Compute the test statistic. (Round your answer to 3 decimal places.)

A preliminary study of a human T-cell clone indicates that it has been derived by cloning a regulatory ?? T cell. Therefore, the subsequent analyses are expected to detect the presence of [complete the sentence and assess the resulting statements (83-94) as either factually correct (= true) or incorrect (= false)]:

83. TCR ? chain mRNA.

84. CD8 mRNA.

85. CD4 mRNA.

86. AIRE mRNA.

87. IL-2R ? chain mRNA.

88. FoxP3 mRNA.

89. MHC class I ? chain mRNA.

90. MHC class II ? chain mRNA. 91. ?2-microglobulin mRNA.

92. IgG heavy chain DNA.

93. TCR ? chain DNA.

94. TCR ? chain DNA.

1. A scientist is studying human memory. Subjects are shown a five-digit number for different lengths of time and then must write the number down. The subject either correctly recalls the number or fails to recall it. (Answer using R CODING) The results are as follows:

times <- c(10.73, 9.9, 9.61, 8.7, 8.56, 8.31, 8.18, 7.86, 7.63, 6.99, 6.66, 6.1, 5.92, 5.84, 5.67, 5.64, 5.56, 5.29, 5.1, 5.09, 4.92, 4.81, 2.86, 2.13, 2.05, 1.95, 1.67, 1.67, 1.38, 1.02)

correct <- c(1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0)

Here, times shows the amount of time given to the student, and correct is a Bernoulli variable, with 1 meaning the number was correctly recalled 0 meaning it was not.

a) Report your p-value, state your null hypothesis, state whether your p-value is significant, and interpret.

b) give a rough estimate for the time required for the number to be correctly recalled with 90% probability

Lester Hollar is vice president for human resources for a large manufacturing company. In recent years, he has noticed an increase in absenteeism that he thinks is related to the general health of the employees. Four years ago, in an attempt to improve the situation, he began a fitness program in which employees exercise during their lunch hour. To evaluate the program, he selected a random sample of eight participants and found the number of days each was absent in the six months before the exercise program began and in the six months following the exercise program. Below are the results.

  Click here for the Excel Data File

At the 0.010 significance level, can he conclude that the number of absences has declined? Estimate the p-value.

1. State the decision rule for 0.010 significance level. (Round your answer to 3 decimal places.)

2. Compute the test statistic. (Round your answer to 3 decimal places.)

3. The p-value is

• Between 0.01 And 0.025

• Between 0.001 And 0.005

• Between 0.005 And 0.01

4. State your decision about the null hypothesis.

• Fail to reject H₀

• Reject H₀

If you were the Human Resources manager and wanted to convince the CEO/management team to implement a flextime policy (e.g., can work any 8 hours between 6 am and 6 pm) to assist employees with children (elderly parents, others) to care for, what would you say/do?

You should present your post from the viewpoint of your role as the HR manager, a senior and experienced leader, to the CEO and his/her management team. It should be a comprehensive discussion or presentation-like, using influence and persuasion techniques. Don't forget to introduce the topic as if you were in a leadership meeting with the CEO and his/her team and not all members know about your topic and request; don't forget to be clear on the request.

Lester Hollar is vice president for human resources for a large manufacturing company. In recent years, he has noticed an increase in absenteeism that he thinks is related to the general health of the employees. Four years ago, in an attempt to improve the situation, he began a fitness program in which employees exercise during their lunch hour. To evaluate the program, he selected a random sample of eight participants and found the number of days each was absent in the six months before the exercise program began and in the six months following the exercise program. Below are the results.

At the 0.05 significance level, can he conclude that the number of absences has declined? Estimate the p-value.

a. State the decision rule for 0.05 significance level.

b. Compute the test statistic

A manager in the human resources department randomly selected five employees files and recorded the following data on X = number of weeks of paid vacation (annually) and Y = number of sick days claimed by the employee in the previous year. An analysis of the linear relationship between X and Y is desired.

CALCULATE SST

CALCULATE SSR

CALCULATE SSE