ASSIGNMENT #1

Remember…you are expected to do the textbook problems, but they do not have to be turned in.  Only turn in the answers to the questions below.

1. For each of the following, find the appropriate value for k and draw the corresponding graph (with the correct area under the curve shaded):

• P(-2.2 < Z < k) = 0.8943
  • P(Z > k) = 0.0392
  • P(Z < k) = 0.1736

• Using the T distribution, find the following and draw the corresponding graph (with the correct area under the curve shaded) :

• P(T > 2.101) when ν = 18.
• P(-0.856 < T < 2.787) when ν = 25.
• P(T < -1.833) when ν = 9.

• Using the χ² distribution, find the following and draw the corresponding graph (with the correct area under the curve shaded) :

• P(χ_α² < χ² < 22.307 ) = 0.875 when ν = 15
• P(χ² > χ_α²) = 0.025 when ν = 30.
• P(χ² < χ_α²) = 0.025 when ν = 30.

• For an F distribution, find the following and draw the corresponding graph (with the correct area under the curve shaded) :
•  
• P (F ³ f ) = 0.99 with n₁ = 8 and n₂ = 15. 
• P (F ³ f ) = 0.05 with n₁ = 7 and n₂ = 10. 
• f_0.95 (6, 10)
• P (F ³ 4.16) with n₁ = 12 and n₂ = 12.

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When seeking to identify a patient’s health condition, advanced practice nurses can use a diverse selection of diagnostic tests and assessment tools; however, different factors affect the validity and reliability of the results produced by these tests or tools. Nurses must be aware of these factors in order to select the most appropriate test or tool and to accurately interpret the results.

Not only do these diagnostic tests affect adults, body measurements can provide a general picture of whether a child is receiving adequate nutrition or is at risk for health issues. These data, however, are just one aspect to be considered. Lifestyle, family history, and culture—among other factors—are also relevant. That said, gathering and communicating this information can be a delicate process.

For this Assignment, you will consider the validity and reliability of different assessment tools and diagnostic tests. You will explore issues such as sensitivity, specificity, and positive and negative predictive values. You will also consider examples of children with various weight issues. You will explore how you could effectively gather information and encourage parents and caregivers to be proactive about their children’s health and weight.

To Prepare

Review this week’s Learning Resources and consider factors that impact the validity and reliability of various assessment tools and diagnostic tests.

By Day 1 of this week, you will be assigned to one of the following Assignment options by your Instructor: Adult Assessment Tools, Diagnostic Tests. Based on the Assignment option assigned to you, your Instructor will also assign you assessment tools or diagnostic tests to apply to either an adult  health example assigned to you. Note: Please see the “Course Announcements” section of the classroom for your assignments from your Instructor.

Search the Walden Library and credible sources for resources explaining the tool or test you were assigned. What is its purpose, how is it conducted, and what information does it gather?

Also, as you search the Walden library and credible sources, consider what the literature discusses regarding the validity, reliability, sensitivity, specificity, predictive values, ethical dilemmas, and controversies related to the test or tool.

ASSIGNMENT#3

1-Assignment (3–4 pages, not including title and reference pages):

Assignment Option 1: Adult Assessment Tools or Diagnostic Tests:(Mammogram)

Include the following:

1-A description of How the Assessment Tool or Diagnostic Test you were assigned is used in healthcare.

2-What is its purpose?

3-How is it conducted?

4-What information does it gather?

5-Based on your research, evaluate the Test or the Tool’s Validity and Reliability, and Explain any Issues with sensitivity, reliability, and predictive values.

NOTE: Remember at least three references and use APA formatting

Note: For this Discussion, you are required to complete your initial post before you will be able to view and respond to your colleagues’ postings. Begin by clicking on the “Post to Discussion Question” link, and then select “Create Thread” to complete your initial post. Remember, once you click on Submit, you cannot delete or edit your own posts, and you cannot post anonymously. Please check your post carefully before clicking on Submit!

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Pick a location outside of the United states and describe the state of the atmosphere at that location. Refer to your textbook about describing the state of the atmosphere and include at least 6 of the 11 weather parameters. This post should be 300 words and sources should be cited. 

Here is an example: 

The location I have selected is Cancun, Quintana Roo, Mexico. The climate of Cancun is tropical (“Climate”). From May to October the weather is muggy and rainy (“Climate”). On the other hand, November to April the weather is dry and cooler (“Climate”). The average temperature in January is 75 degrees F (“Climate”). Meanwhile, the average temperature from June to August is 84 degrees F (“Climate”). To determine the state of the atmosphere in Cancun, Quintana Roo, Mexico today, I researched using the weather.com website. On September 7,2019, the maximum temperature is 87 degrees F at 3pm EST. The maximum pressure is typically early or mid afternoon (Mills and Moran 44). After watching the temperature for an hour, the temperature was dropping. The minimum temperature was 76 degrees F. The minimum temperature is typically around sunrise (Mills and Moran 44). The dewpoint is at 76 degrees F. The dew point is “the temperature to which air must be cooled at constant pressure to become saturated with water vapor and for dew to begin forming on relatively cold surfaces” (Mills and Moran 44). The relative humidity is at 70%. Relative humidity is typically the highest around sunrise which is the coldest time (Mills and Moran 44). It is normally the lowest during the warmest part of the day which is about mid-afternoon (Mills and Moran 44). The wind direction is NE 2 mph. The wind direction and speed is “the wind direction from which the wind blows.”

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Learning About Cookies as Spyware.

Research what kind of information cookies store. You might find the following  websites helpful:

• www.allaboutcookies.org/
• www.howstuffworks.com/cookie1.htm

Using WORD, write an ORIGINAL brief essay of 300 words or more describing cookies and the way they can invade privacy.

Safe Assign is software that verifies the originality of your work against on-line sources and other students.

Note your Safe Assign score. Continue submitting until your Safe Assign score is less than 25. For your first written assignment, you have unlimited times to retry your assignment.

Read Chapter 1 of the Easttom text, Introduction to Computer Security.

Primary topics:

• Types of threats
• Network attacks
• Security terminolog

Resources : https://www.youtube.com/watch?v=96VDo2yv3-g

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4.1.4

A project conducted by the Australian Federal Office of Road Safety asked people many questions about their cars.  One question was the reason that a person chooses a given car, and that data is in table #4.1.4 (“Car preferences,” 2013).

Table #4.1.4: Reason for Choosing a Car

Find the probability a person chooses a car for each of the given reasons.

4.2.2

Eyeglassomatic manufactures eyeglasses for different retailers.  They test to see how many defective lenses they made in a time period.  Table #4.2.2 gives the defect and the number of defects.

Table #4.2.2: Number of Defective Lenses

1. Find the probability of picking a lens that is scratched or flaked.
2. Find the probability of picking a lens that is the wrong PD or was lost in lab.
3. Find the probability of picking a lens that is not scratched.
4. Find the probability of picking a lens that is not the wrong shape.

4.2.8

In the game of roulette, there is a wheel with spaces marked 0 through 36 and a space marked 00.

1. Find the probability of winning if you pick the number 7 and it comes up on the wheel.
2. Find the odds against winning if you pick the number 7.
3. The casino will pay you $20 for every dollar you bet if your number comes up.  How much profit is the casino making on the bet?

4.4.6 Find  

4.4.12 How many ways can you choose seven people from a group of twenty?

5.1.2

Suppose you have an experiment where you flip a coin three times.  You then count the number of heads.

1. State the random variable.
2. Write the probability distribution for the number of heads.
3. Draw a histogram for the number of heads.
4. Find the mean number of heads.
5. Find the variance for the number of heads.
6. Find the standard deviation for the number of heads.
7. Find the probability of having two or more number of heads.
8. Is it unusual to flip two heads?

5.1.4

An LG Dishwasher, which costs $800, has a 20% chance of needing to be replaced in the first 2 years of purchase.  A two-year extended warranty costs $112.10 on a dishwasher.  What is the expected value of the extended warranty assuming it is replaced in the first 2 years?

5.2.4

Suppose a random variable, x, arises from a binomial experiment.  If n = 6, and p = 0.30, find the following probabilities using technology.

a.)  

b.)  

c.)  

d.)  

e.)  

f.)  

5.2.10

The proportion of brown M&M’s in a milk chocolate packet is approximately 14% (Madison, 2013).  Suppose a package of M&M’s typically contains 52 M&M’s.

1. State the random variable.
2. Argue that this is a binomial experiment

Find the probability that

• Six M&M’s are brown.
• Twenty-five M&M’s are brown.
• All of the M&M’s are brown.
• Would it be unusual for a package to have only brown M&M’s?  If this were to happen, what would you think is the reason?

5.3.4

Approximately 10% of all people are left-handed.  Consider a grouping of fifteen people.

1. State the random variable.
2. Write the probability distribution.
3. Draw a histogram.
4. Describe the shape of the histogram.
5. Find the mean.
6. Find the variance.
7. Find the standard deviation.

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