Specifications

• Create an abstract Employee class that provides private attributes for the first name, last name, email address, and social security number. This class should provide functions that set and return the employee’s first name, last name, email address, and social security number. This class has a function: get_net_income which returns 0.
• Create a Manager class that inherits the Employee class. This class should add private attributes for years of experience and the annual salary. This class should also provide necessary set and get functions. It should add a bonus ($1,000/year of experience) to the annual salary. The income tax rate should be 30%. This class should override the get_net_income function of the Employee class. Note that the gross income is calculated as follows:
  • bonus = years of experience * 1000
  • gross income = annual salary + bonus
  • tax rate = 30%
  • income tax = gross income * tax rate
  • net income = gross income - income tax
• Create a Representative class that inherits the Employee class. This class should add private attributes for the weekly hours of work and the pay rate. This class should also provide necessary set and get functions. The income tax rate should be 20%. This class should override the get_net_income function of the Employee class. Note that the gross income is calculated as follows:
  • gross income = weekly hours of work * 52 * pay rate
  • tax rate = 20%
  • income tax = gross income * tax rate
  • net income = gross income - income tax
• In the main function, the program should create Manager or Representative objects from the data entered by the user and save them in a list named employees. After the user has terminated data entries, your program should display the information of all employees on the output with this format: last name, first name, email, social security number, net income.

Sample Output (Your output should be similar to the text in the following box)

7.Name two advantages to a floating rate exchange regime.

8.Name two disadvantages to a floating rate exchange regime.

9.Name two advantages to a fixed rate exchange regime.

10.Name two disadvantages to a fixed rate exchange regime.

1. Consider the following XML file:

<root>

<students>

<element>

<ID>100345</ID>

<Nationality>USA</Nationality>

<Program>ICT</Program>

<age>23</age>

<name>John</name>

</element>

<element>

<ID>100876</ID>

<Nationality>MALAYSIA</Nationality>

<Program>CS</Program>

<age>28</age>

<name>Awang</name>

</element>

<element>

<ID>100257</ID>

<Nationality>AUSTRALIA</Nationality>

<age>25</age>

<name>Alex</name>

</element>

</students>

</root

Write an XQUERY to display the information for all students who are not Malaysians or older than 25.

Given the following 7 relations:

MIScompany (name, address, phone, email, FedTaxId, StaTaxId)

branch (branchId, name, address, phone, email, FedTaxId, StaTaxId)

employee (empId, driverId, ssno, name, branchId)

customer (custId, name, address, driverId, ssno, FedTaxId, StaTaxId)

equipment (equipId, name, type, upc, purchaseDate, year, manufacturId, cost, rentFee, branchId )

manufacturer (manufacturId, name, FedTaxId, StaTaxId, phone, email)

rental (rentalId, equipId, custId, rentDate&time, returnDate&time, empId)

1) Use relational algebra to list every manufacturer that only makes electric cleaning tool (type of equipment). The report should contain manufacturId and manufacturer name.

An MNE from Asia that focuses on agriculture – name and describe the company in one or two sentences.

An MNE from Africa that focuses on transportation – name and describe the company in one or two sentences.

An MNE from Central America that focuses on financial services – name and describe the company in one or two sentences.

An MNE from South America that focuses on energy – name and describe the company in one or two sentences.

An MNE from Europe that focuses on textiles or clothing – name and describe the company in one or two sentences.

An MNE from North America that focuses on raw materials – name and describe the company in one or two sentences.

An MNE from Oceania that focuses on manufacturing – name and describe the company in one or two sentences.

An MNE that does work in Antarctica – any kind of company – name and describe the company in one or two sentences

please debug this by fixing all the mistakes in C#:

// Creates a Breakfast class
// and instantiates an object
// Displays Breakfast special information
using System;
public class DebugSeven2
{
   Breakfast special = new Breakfast("French toast", 4.99);
   //Display the info about breakfast
   Console.WriteLine(Breakfast.info);
   // then display today's special
   Console.WriteLine("Today we are having {0} for {1}",
      special.Name, special.Price.ToString("C2"));
}
class Breakfast
{
   // info is class field
   public static string info =
      "Breakfast is the most important meal of the day.";
   private string name;
   private double price;
   // Breakfast constructor requires a
   // name, e.g "French toast", and a price
   private Breakfast(string name, double price)
   {
       Name = Name;
       price = price;
   }
   public string Name
   {
      get
      {
          return Name;
      }
      set
      {
          value = name;
      }
    }
    public double Price
    {
       get
       {
          return price;
       }
       setUp
       {
          price = value;
       }
    }
}

1. An MNE from Asia that focuses on agriculture – name and describe the company in one or two sentences.
2. An MNE from Africa that focuses on transportation – name and describe the company in one or two sentences.
3. An MNE from Central America that focuses on financial services – name and describe the company in one or two sentences.
4. An MNE from South America that focuses on energy – name and describe the company in one or two sentences.
5. An MNE from Europe that focuses on textiles or clothing – name and describe the company in one or two sentences.
6. An MNE from North America that focuses on raw materials – name and describe the company in one or two sentences.
7. An MNE from Oceania that focuses on manufacturing – name and describe the company in one or two sentences.
8. An MNE that does work in Antarctica – any kind of company – name and describe the company in one or two sentences.

Using Python.

A file exists on the disk named students.txt. The file contains several records, and each record contains two fields: (1) the student’s name, and (2) the student’s
score for the final exam. Write code that deletes the record containing “John Perz”as the student name.

This the code i have so far but it's not working:

import os

def main():

found=False

search='John Perz'

student_file = open('student.txt','r')

temp_file = open('temp_students.txt','w')

name=student_file.readline()

score=''

while name !='':

score=student_file.readline()

name=name.rstrip('/n')

score=score.rstrip('/n')

if name !=search:

temp_file.write(name+'/n')

temp_file.write(score+'/n')

else:

found=True

name=student_file.readline()

student_file.close()

temp_file.close()

os.rename('temp.text','student.text')

if found:

print("The record was deleted")

else:

print("Record not found")

main()

The authors of a paper describe an experiment to evaluate the effect of using a cell phone on reaction time. Subjects were asked to perform a simulated driving task while talking on a cell phone. While performing this task, occasional red and green lights flashed on the computer screen. If a green light flashed, subjects were to continue driving, but if a red light flashed, subjects were to brake as quickly as possible. The reaction time (in msec) was recorded. The following summary statistics are based on a graph that appeared in the paper.

n = 49     

x = 525

     s = 70

(a)

Construct a 95% confidence interval for μ, the mean time to react to a red light while talking on a cell phone. (Round your answers to three decimal places.)

Interpret a 95% confidence interval for μ, the mean time to react to a red light while talking on a cell phone.

There is a 95% chance that the true difference in the mean time to react to a red light while talking on a cell phone is directly in the middle of these two values. There is a 95% chance that the true mean time to react to a red light while talking on a cell phone is directly in the middle of these two values.     We are 95% confident that the mean time to react to a red light while talking on a cell phone is between these two values. We are 95% confident that the true mean time to react to a green light while talking on a cell phone is directly in the middle of these two values. We are 95% confident that the true mean time to react to a green light while talking on a cell phone is between these two values.

(b)

What assumption must be made in order to generalize this confidence interval to the population of all drivers?

The assumption that the subjects of the experiment formed a random sample from the population of drivers. The assumption that the subjects of the experiment formed the population of drivers.     The assumption that the experiment captured the population of drivers. The assumption that the subjects of the experiment formed the population of distracted drivers. The assumption that the subjects of the experiment formed a random sample from the population of distracted drivers.

(c)

Suppose that the researchers wanted to estimate the mean reaction time to within 6 msec with 95% confidence. Using the sample standard deviation from the study described as a preliminary estimate of the standard deviation of reaction times, compute the required sample size. (Round your answer up to the nearest whole number.)

n =

You may need to use the appropriate table in Appendix A to answer this question.