Calculations Shown


A certain culture of the bacterium Streptococcus A initially has 10 bacteria and is observed to double every 1.5 hours.

(a) Find an exponential model

(b) Estimate the number of bacteria after 34 hours. (Round your answer to the nearest whole number.)

(c) After how many hours will the bacteria count reach 10,000? (Round your answer to one decimal place.)

The fox population in a certain region has a relative growth rate of 8% per year. It is estimated that the population in 2013 was 16,000.

(a) Find a function

(b) Use the function from part (a) to estimate the fox population in the year 2019. (Round your answer to the nearest whole number.)

(c) After how many years will the fox population reach 24,000? (Round your answer to one decimal place.)

The population of a country has a relative growth rate of 2% per year. The government is trying to reduce the growth rate to 1%. The population in 2011 was approximately 120 million. Find the projected population for the year 2040 for the following conditions. (Round your answers to the nearest whole number.)

(a) The relative growth rate remains at 2% per year.

(b) The relative growth rate is reduced to 1% per year.
The count in a culture of bacteria was 200 after 2 hours and 12,800 after 6 hours.

(a) What is the relative rate of growth of the bacteria population? Express your answer as a percentage. (Round your answer to the nearest whole number.)

(b) What was the initial size of the culture? (Round your answer to the nearest whole number.)

(c) Find a function that models the number of bacteria n(t) after t hours. (Enter your answer in the form


Round your n0 value to the nearest whole number. Round your r value to two decimal places.)

n(t) = _______

(d) Find the number of bacteria after 4.5 hours. (Round your answer to the nearest hundred.)

e) After how many hours will the number of bacteria reach 25,000? (Round your answer to two decimal places.)

The half-life of radium-226 is 1600 years. Suppose we have a 24-mg sample.

(a) Find a function

m(t) = m02^−t/h

that models the mass remaining after t years.

m(t) = ____________

(b) Find a function

(c) How much of the sample will remain after 3500 years? (Round your answer to one decimal place.)

(d) After how many years will only 17 mg of the sample remain? (Round your answer to one decimal place.)

To complete the assignment, use the saved version of the Virginia Hospitals


To complete the assignment, use the saved version of the VirginiaHospitals_2001-2005 database to create a new worksheet by copying and pasting the variables listed below.

Next, run a multiple regression model using 2005 data that has Total operating expense_05 as the dependent variable and the following variables as independent predictors:

Staffed beds_05

Medicare Days_05

Medicaid Days_05

Total Surgeries_05




System Membership


Teaching Affiliation

Age 65+

Crime Rate


Then, write a 2- to 3-page paper in which you:


Specify the model in terms of a regression equation.

For each predictor variable, state a hypothesis based on your understanding of the expected relationship of that variable to the dependent variable and provide your rationale for the stated hypothesis.

Report summary descriptive statistics for each of the variables in your model (mean or percentage, and standard deviation).

Report the coefficient and the sign (plus [+] or minus [–]) for each variable and the statistical significance of each variable (level of significance or nonsignificance), as well as the R-square for the model.

Interpret the findings and explain what they would mean to a health care professional working in a hospital setting.

Your written assignments must follow APA guidelines. Be sure to support your work with specific citations from this week’s Learning Resources and additional scholarly sources as appropriate. Refer to the Essential Guide to APA Style to ensure your in-text citations and reference list are correct

A+ Answers


Consider that you work in the human resources management department of a local business and that many of your friends work there. Although you don’t personally generate payroll checks, you still have the ability to look up anyone’s salary. Would you check on your friends’ records to see if they’re earning more money than you? For that matter, would you look up their salary just out of simple curiosity, knowing that you would never do anything with the information or share it with anyone else? Why or why not? People working at the Internal Revenue Service (IRS) were caught just curiously looking up the reported incomes of movie stars and other high-profile public figures. Is this acceptable? Why or why not?

IT 540


IT 540


Note: All written assignments should be completed using APA format, unless otherwise noted in the instructions.

Read the following information about a typical dental practice:

Family Dental has two offices in the same city — the North office and the South office. These offices offer the same dental services to patients. Patients can make appointments to either office at their convenience to see the dentist of their choice. Both offices are similarly equipped.

The professional staff includes the dentists, hygienists, dental mechanics, and administrative staff (receptionist, billing clerk, and office manager).

Each Family Dental office has a waiting area served by a receptionist who uses a computer to check in patients, schedule one of the examination rooms, and answer the phone. The waiting room has a door opening to the outside. A second door admits patients into the rest of the facility. Background music plays inside the waiting area. There is also a large aquarium on display.

Each examination area is partitioned off from the adjacent ones. Each has a computer and LCD screen used to pull up patient information and record new dental data such as x-ray interpretations, examination and test results, and procedures done for the patient. A low level sound masking system is installed in this area.

After their treatment the patient visits the billing clerk’s desk, which of course has a computer and a printer. Here patients pay (cash co-pay, credit card, or check), insurance information is verified, and an appointment is made. This clerk also mails out postcard appointment reminders, and answers the phone.

The Family Dental dentists share a private office that has a computer and a printer. Here they can review patient data, access the Internet, and exchange email with their patients, colleagues, and acquaintances.

A database server containing patient data sits in a closet, next to a small tape library used for backup. Next to it sits a VPN server, firewall/router, and DSL modem connected to the Internet. The VPN server accepts incoming connections from the dentist’s home computers. It also provides a permanent VPN connection between the North and South Offices. In this way, all patient data is available at all times at either office.

Most patient data is stored electronically on the database server, but some data such as x-rays and third party labs results are still in physical form. Family Dental also depends on third party service providers to build crowns, braces, false teeth, soft dental protectors, and such. Information is exchanged with service providers using telephone, fax, letter, and email.

The network infrastructure’s management and maintenance is outsourced.

Family Dental also maintains an informative web site to advertise its practice. The site is remotely hosted.

Answer the following questions in essay style. Make any sensible assumptions necessary in order to continue your analysis. Feel free to use the Discussion board to share your assumptions with others in the class:

Q1 What is all the electronic and non-electronic private health information (ePHI) that is stored, processed, and transmitted at the Family Dentals two offices?

Q2 Assess the practice’s organization. Where is it most likely HIPAAcompliant? What changes should be made to move the practice closer to compliance?

Q3 Assess the practice’s physical and technical safeguards. Where is it most likely HIPAA compliant? What changes should be made to move the practice closer to compliance?

Q4 Family Dental exchanges data with service providers and uses a third party to manage its IT infrastructure. What administrative and organizational safeguards should the practice expect these providers to adhere to?

You are a census officer in a newly democratic nation and


Assignment 1: The Apportionment Problem

You are a census officer in a newly democratic nation and you have been charged with using the census data from the table below to determine how 100 congressional seats should be divided among the 10 states of the union.

State    Population

1          15475

2          35644

3          98756

4          88346

5          369

6          85663

7          43427

8          84311

9          54730

10        25467

Being a fan of United States history, you are familiar with the many methods of apportionment applied to this problem to achieve fair representation in the US House of Representative. You decide that apportionment (chapter 11, sections 1-4 in your textbook) is the best approach to solving this problem, but need to compare several methods and then determine which is actually fair.

Using the Hamilton method of apportionment, determine the number of seats each state should receive.

Using the numbers you just calculated from applying the Hamilton method, determine the average constituency for each state. Explain your decision making process for allocating the remaining seats.

Calculate the absolute and relative unfairness of this apportionment.

Explain how changes in state boundaries or populations could affect the balance of representation in this congress. Provide an example using the results above.

How and why could an Alabama Paradox occur?

Explain how applying the Huntington-Hill apportionment method helps to avoid an Alabama Paradox.

Based upon your experience in solving this problem, do you feel apportionment is the best way to achieve fair representation? Be sure to support your answer.

Suggest another strategy that could be applied to achieve fair representation either using apportionment methods or a method of your choosing