>Mathematics homework help

Answer all questions. Show all calculations. Explain clearly and completely.

1.  A statewide poll for an upcoming gubernatorial election concluded that 52.8% of the voters will vote for candidate A and 47.1% will vote for candidate B. The margin of error is ±2.5%. The confidence level for this result is 95%.

1a. Explain the Confidence Interval.  (3 pts.)

1b. Explain the difference between the Confidence Interval and the Confidence Level.  (5 pts.)

1c.  Explain what happens to the Confidence Level when the Confidence Interval is increased (widened).  (4 pts.)

1d.  Is the poll result predicting a win for either candidate (A or B)? Explain.  (5 pts.)

1e.  Explain at least two reasons that could cause these poll results to be inaccurate,biased or unreliable.  (8 pts.)

2.  A university president claims that on average, at least 60% of incoming freshman students go on to earn their degrees and graduate from the university.

For the hypothesis test, a random sample of 50 freshman students were selected for a sample study. 27 of them graduated with their degrees. 27 out of 50 is 54%.

The test statistic (formula result) is z = -1.46.

The p-value for this test statistic is .0721 or 7.21%.

2a. Explain is the parameter of interest?  (3 pts)

2b.  Explain the Null Hypothesis.  (4 pts.)

2c.  Explain the Alternative Hypothesis.  (4 pts.)

2d.  Based on the test statistic, z, and the p-value, explain whether we should accept or reject the Null hypothesis.  (6 pts.)

2e.  Explain in your own words what the conclusion in 2d says about the result of the test and the action to be taken. (8 pts)

 

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Technology and Small Businesses

Case Study
You work as a technology consultant and provide advice to small businesses.
One day, Louise and Mike approach you. The couple manage a local gym
where their members access gym equipment and sign up for weekly training
sessions with a personal trainer. New members are offered one free
consultation followed by a workout session with one of three personal trainers
employed at the gym.
People interested in joining the gym usually first enquire over the phone, or inperson at reception. A staff member will then provide a tour of the gym’s
facilities, answer any questions, and arrange a future session where new
members meet their new personal trainer. The staff member may ask the new
member what their goals are and what type of training they would like to
receive (i.e. cardio, strength). This helps them to then know which personal
trainer would be most suitable for them. Staff members are expected to be
familiar with all personal trainers, such as their qualifications and
specialisation.
At this stage important information is collected and a contract is signed by the
client. This includes:
• Client’s name and date of birth
• A copy of the clients ID (passport or drivers licence)
• contact details including phone, email and address
• emergency contact details,
• details of any medication the client is currently taking, if any.
• details of any disabilities or injuries that the personal trainer should know
about which has occurred in the past 12 months.
The client will then be provided a free personal training session where further
information is then collected. During this session, further information is
collected, which includes details of the clients:
• weight,
• height,
• BMI (body mass index),
• blood pressure
• fitness goals.
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Polytechnic of New
• Any other relevant information that will help the personal trainer know in
advance of preparing a training program (i.e. problems with joints, past
injuries).
Currently, all information is collected on paper. The client will usually write this
information on a form. This form is then scanned, and a copy is kept in the
office filing cabinet.
Client needs
Louise and Mike are looking to develop a new process for managing member
information. They have stressed the need for a new system that is easy to use
and convenient.
The couple are also in the process of creating a new website to attract more
people to the gym and to increase awareness of all the services the gym
provides. They see an opportunity to have new clients sign up for their services
through an online web form. The information they share in a web form can then
be accessed by staff members, and further help with the process of assigning
the right personal trainer to the new member, and help the personal trainers
better prepare their first session with the new member.
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Question 1: The information management process
There are several phases in the information management process. In Louise’s
case, the right type of information needs to be obtained, then conveniently
stored, maintained and retrieved to meet her needs.
i. Outline each stage of the information life cycle and provide examples
of how gym members information could be most effectively captured,
organised, processed, maintained and destroyed.
ii. Explain how a new online system for managing information would
benefit the company, with reference to the DIKAR/RAKID Model.
[Question 1 total: 10 marks]
Question 2: Ethical issues
Ethical issues may arise wherever there is data – particularly sensitive and
personal data.
i. Provide three examples where ethical issues may arise with the
manner in which information is (i) collected (ii) stored and (iii) shared
with others. Each example should outline the details of a possible
scenario, and explain how this is a problem, and how it could be
avoided. You may like to present your answers in a table format.
Outline the
scenario in detail
Problem Solution
Scenario #1
{briefly outline a
scenario that
involving data
collection here}
Explain why this is a
problem, and the ethical
issues that may arise.
Suggest an alternative
approach that would
reduce and/or eliminate
problems from
occurring.
Scenario #2
{involving data
storage}
Scenario #3
{involving sharing
data}
[Question 2 total: 10 marks]
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Question 3: XML Data scheme
Create an XML data scheme using custom tags. Illustrate it with a sample data
base that contains two of the garage customers’ details.
[Question 3 total: 5 marks]
Question 4: Security threats (300-400 words)
i. Social engineering is a big threat. Give four (4) examples of how an
attack could be carried out. For each, describe the countermeasures
that could be applied.
Identify a possible
attack
Possible countermeasures
Possible attack #1
Possible attack #2
Possible attack #3
Possible attack #4
[Question 1 total: 5 marks]

Sample Solution

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whether or not the U.S. should restrict its lands and waters from being tapped for natural resources.

Write an entry for an environmental science blog in which you argue whether or not the U.S. should restrict its lands and waters from being tapped for natural resources.  Your essay must be based on ideas and information that can be found in the Natural Resources passage set.

Be sure to

include a claim;

address counterclaims;

use evidence from both sources;

avoid overly relying on one source.

Your response should be in the form of a multi-paragraph essay.

Anti-Bias Action Plan

Your course project is to develop an Anti-Bias Action Plan. For this part of the project, you will assess the ethical and procedural concerns you need to consider to make it a success.

Step1: Visit the NAEYC website.

  • Read the NAEYC Code of Ethical Conduct and Statement of Commitment.

Step 2: Reflect on the following points.

  • List 3-5 recommendations for ways to implement your Anti-Bias Action Plan, including what could be done to overcome any of the obstacles and any supports that could help alleviate these issues.
  • Discuss the potential impact of ethical issues that might arise when the plan is implemented with children and families of the specified group you researched.
  • Connect your recommendations by identifying 3 relevant points from the NAEYC Code of Ethical Conduct and Statement of Commitment; be sure to look in all four parts and in the Ideals and Principles sections.
  • Explain how you will measure the success of your plan (that is, how you will determine that your objectives for the project have been met). Identify key elements that would demonstrate success.
  • Discuss how long it might take for the change(s) to become evident.
  • If your plan were to fail, demonstrate your ability to think critically by describing the best way to assess why it might have failed. Then, explain how you would revise the plan for a successful outcome.

Your reflection paper should be 3 pages long.

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