Two boys are sliding toward each other on a frictionless, ice-covered parking lot. Jacob, mass 45 kg, is gliding to the right at 7.95 m/s, and Ethan, mass 31.0 kg, is gliding to the left at 10.9 m/s along the same line. When they meet, they grab each other and hang on. (a) What is their velocity immediately thereafter? magnitude m/s direction (b) What fraction of their original kinetic energy is still mechanical energy after their collision? % (c) That was so much fun that the boys repeat the collision with the same original velocities, this time moving along parallel lines 1.02 m apart. At closest approach, they lock arms and start rotating about their common center of mass. Model the boys as particles and their arms as a cord that does not stretch. Find the velocity of their center of mass. magnitude m/s direction (d) Find their angular speed. rad/s (e) What fraction of their original kinetic energy is still mechanical energy after they link arms? % (f) Why are the answers to parts (b) and (e) so different? This answer has not been graded yet.

HIgh-income people are willing to pay more than lower-income people to avoid the risk of death. For example. they are more likely to pay for safety features on cars. Do you think cost-benefit analysis should take this fact into account when evaluating public projects? consider, for instance, a rich town and a poor town, both of which are considering the installation of a traffic light. should the rich town use higher dollar value for a human life in making this decision? why or why not?

Assume that the (daily) demand (measured in hours of work) of unskilled labor in a particular town is given by D(w) = 60 − w, where w denotes the hourly wage rate. The supply of unskilled labor at the same location is given by S(w) = 3w − 12. (a) What is the competitive market equilibrium wage for unskilled labor in this town? (b) Plot the demand and supply curves on the same graph, having wages on the vertical axis and hours of work (that is, labor) on the horizontal axis. (c) Explain what would be the effect (if any) of a $20 per hour minimum wage in this market. What happens to the market demand and market supply of labor? Identify who benefits and who loses from such measure and by how much. What can you say about the society as a whole: is it better or worse off (and by how much)?

Draw a new graph and mark everything clearly on it. Please show all works and draw graph.

Use the following information about the town of? Boone, NC to answer the next few questions. Suppose Boone has a total population of? 25,000 people. There are? 18,000 people who currently have a job. Another? 3,000 people do not have a job but are currently looking for one. Of those? 3,000 people, 500 of them recently quit and are looking for a job that suits their? skill-set, 1,000 of them were recently replaced by new machinery at the local ski? resorts, and the remaining? 1,500 were laid off due to a recent downturn in the economy? (but are currently looking for a? job). Additionally, another 500 people were recently laid off due to a downturn in the? economy, but these people gave up looking for work about 3 months ago due to economic reasons.? Last, there are? 1,000 people under age 16 and? 2,500 full-time students in the town of Boone. What is the unemployment rate in? Boone?

Fountain View Hospice is an inpatient hospice that has an EHR. Because of a hurricane, the town, including the hospice, was flooded. Patients had to be evacuated, and the data center was underwater. The hospice backs up its files daily, and the files are stored at a vendor site across town. The vendor’s office was unaffected by the flood, so the backup files are safe. The vendor does not have the EHR application. The floodwaters have receded, and the building is undergoing renovations. The vendor has stated that there is no way to recreate their application and so full implementation of the EHR will be necessary and could take a year or more. In the meantime, the hospice will have to operate using paper health records. The hospice will have to pay to select and implement the new information system as well as manage the paper health record.

1. What else could the hospice have done to prevent having to completely reimplement the EHR?

2. Are there other issues that could have been addressed to help prevent this?

A random sample of elementary school children in New York state is to be selected to estimate the proportion p p who have received a medical examination during the past year. It is desired that the sample proportion be within 0.045 of the true proportion with a 98 98 % level of confidence (a) Assuming no prior information about p p is available, approximately how large of a sample size is needed?

If a planning study indicates that pp is around 0.20.2, approximately how large of a sample size is needed?

A school psychologist is interested in the effect a popular new cognitive therapy on anxiety. The psychologist collects a sample of 13 students and gives them the cognitive therapy once a week for two months. Afterwards the students fill out an anxiety inventory in which their average score was 46.21. Normal individuals in the population have an anxiety inventory average of 49 with a standard deviation of 2.7. What can be concluded with α = 0.10?

a) What is the appropriate test statistic?'

1. na 2. z-test 3. one-sample test 4. independent-samples t-test 5. related-samples t-test

b1)
Population: (choose one of the following)

1. normal individuals 2. new hypnosis technique 3. two months 4. students receiving hypnosis

b2)
Sample: (choose one of the following)

1. normal individuals 2. new hypnosis technique 3. two months 4. students receiving hypnosis

c) Obtain/compute the appropriate values to make a decision about H₀.
(Hint: Make sure to write down the null and alternative hypotheses to help solve the problem.)
critical value = ________ ; test statistic = ___________
Decision: ***(choose one)*** 1. Reject H0 or 2. Fail to reject H0

d) If appropriate, compute the CI. If not appropriate, input "na" for both spaces below.
[ ], [ ]

e) Compute the corresponding effect size(s) and indicate magnitude(s).
If not appropriate, input and select "na" below.
d = ___________ ;   *(choose one)1. na 2. trivial effect 3. small effect 4. medium effect 5. large effect
r² = ___________ ;   *(choose one)1. na 2. trivial effect 3. small effect 4. medium effect 5. large effect

f) Make an interpretation based on the results. (Choose one)

1.) The population has significantly lower anxiety than students that underwent cognitive therapy.

2.) The population has significantly higher anxiety than students that underwent cognitive therapy.  

3.) The new cognitive therapy technique does not significantly effect anxiety.

You are a new computer network engineer at School of IT and Engineering at Melbourne Academy of Technology (MAT). Recently MAT suffered a major data loss where hundreds of student credit card details were stolen. forensic engineers identified that the culprit hacked the free Internet offered within the campus and eventually acquired the password of the system admin at the school.

a) Recommend appropriate wireless network security solutions to better protect data at MAT.

b) Discuss the ethical standards in relation to storing credit card information on the network sever

David is a brand new school nurse, with prior nursing experience, and will be serving a population of 1000 students at Murphy High School. While David has a health tech in the office, he also is considering how he will ensure that treatments are provided for students with special needs requiring medical treatments and nutritional considerations. He does have access to a treatment nurse (licensed RN) that floats to his high school and can be utilized on scheduled occasions. Together, the three team members come up with a planning session in which they identify the top 6 sub-populations with medical and nursing care needs in Murphy high school.

1) special needs students

a. students that require tube feedings or other nutritional considerations

b. students that require toileting assistance

c. students that require regular medication administration during school hours

2) childbearing students

a. antepartum/prenatal

b. postpartum

3) students with asthma

4) students with diabetes

a. students that require blood glucose checks and treatment

5) students with mental health needs

6) students with physical injuries

Assignment directions:

Please draw your own concept map of a high school school nurse role, including associations to the 6 sub-populations above, and listing out most probable/most common nursing interventions of primary, secondary, and tertiary levels. You may add other influencing factors that may be unique to a high school population of students.

A school psychologist is interested in the effect a popular new hypnosis technique on anxiety. The psychologist collects a sample of 30 students and gives them the hypnosis once a week for two months. Afterwards the students fill out an anxiety inventory in which their mean score was 55.08. Normal individuals in the population have an anxiety inventory mean of 50 with a variance of 7.29. What can be concluded with α = 0.10?

a) What is the appropriate test statistic?
---Select--- na, z-test, one-sample t-test, independent-samples t-test, related-samples t-test

b)
Population:
---Select--- normal individuals, students receiving hypnosis, new hypnosis, technique two months
Sample:
---Select--- normal individuals, students receiving hypnosis, new hypnosis, technique two months

c) Obtain/compute the appropriate values to make a decision about H₀.
(Hint: Make sure to write down the null and alternative hypotheses to help solve the problem.)
critical value = _________; test statistic = ______________
Decision:  ---Select--- Reject H0, Fail to reject H0

d) If appropriate, compute the CI. If not appropriate, input "na" for both spaces below.
[ _________ ,___________ ]

e) Compute the corresponding effect size(s) and indicate magnitude(s).
If not appropriate, input and select "na" below.
d = __________;   ---Select--- na, trivial effect, small effect, medium effect, large effect
r² = ___________ ;   ----Select--- na, trivial effect, small effect, medium effect, large effect

f) Make an interpretation based on the results.

A) The population has significantly lower anxiety than students that underwent hypnosis.

B) The population has significantly higher anxiety than students that underwent hypnosis.    

C) The new hypnosis technique does not significantly effect anxiety.