32. What is empirical research ? 37. Which research positions require a college degree and which ones only require high school diploma ? 41. What’s the difference between open-ended versus closed-ended questions. Which type is the most difficult to tabulate? 42. Which are double-barreled questions?

a 0.490 g sample of a compound is heated through the successive evolution of the following gases, all at 1.00atm pressure: 280 ml of h2o vapor at 182ºC, 112ml of ammonia vapor at 273ºC, 0.0225g ofwater at 400ºC and 0.200g of SO3 at 700ºC, At the end of the heating, 0.090 g of FeO remains. Deduce the empirical formula for the compound

The discussion 2 topic is "The National Center for Health Statistics had change the Standard Population for Age Standardization of Death Rates from 1940 to 2000. Discuss how it affected the age-adjusted rates of mortality. Discuss any one method of adjusted rate (direct / indirect). "

Discuss (direct) 150 to 200 words

Data of 1940 to 2000

Assume that your firm was auditing General Electric in 2000 and was recommending an adjustment to its financial statements that reduced net income. Based on the fees paid to your firm in 2000, what incentive(s) might your firm consider in insisting upon this adjustment? How would your firm's incentive(s) differ after 2004?

Let's go to the movies: A random sample of 43 Foreign Language movies made since 2000 had a mean length of 112.5

minutes, with a standard deviation of 12.6 minutes.

Construct a 95% confidence interval for the true mean length of all Foreign Language movies made since

2000. Round the answers to one decimal place.

CD interest rates vary significantly with time. They hit a historical high in 1981, when the average rate was 16.7%. In 2000, it was 8.1%. In 2009, it was 2%. Find the interest earned by a $3000 two-year CD with interest compounded quarterly in each of the following years. (Round your answers to the nearest cent.)

(a) in 1981 $

(b) in 2000 $

(c) in 2009 $

c++

I need a code that will fill an array size of 1000, an array of size 2000, and an array size of 10000, with random int values.

Basically like this:

array1[1000] = filled all with random numbers

array2[2000] = filled all with random numbers

array3[10000] = filled all with random numbers

C++

no need for print

1. Calculate the future value of these deposits. Remember to total your answer. Assume end of year deposits.

Part a:

n          Deposit            Terms                          FVIF               $

1          $1000              5%, semi-annual

2          $1500              6%, monthly

3          $2000              8%, quarterly

4          $1000              12%, annual

5          $2000               8%, semi-annual

Database Management System

Complete the following exercises in Connolly & Begg:

4.8 The following tables from part of a database held in a relational DBMS

Hotel (hotelNo, hotelName, city)

Room (roomNo, hotelNo, type, price)

Booking (hotelNo, guestNo, dateFrom, dateTo, roomNo)

Guest (guestNo, guestName, guestAddress)

a) Identify the foreign keys in this schema.

b) Explain how the entity integrity rule and the referential integrity rule apply to these relations.

5.8 Describe the relations that would be produced by the following relational algebra operations. In your description, make clear what attribute your relations have, and explain what each relation represents in the real world.

a) π_hotelNo(σ_{price > 50}(Room))

b) σ_{Hotel.hotelno = Room.hotelNo}(Hotel × Room)

c) π_hotelName(Hotel ⨝ _{Hotel.hotelNo = Room.hotelNo}(σ_{price > 50}(Room)))

The following tables form part of a Library database held in an RDBMS:

Book (ISBN, title, edition, year)

BookCopy (copyNo, ISBN, available)

Borrower (borrowerNo, borrowerName, borrowerAddress)

BookLoan (copyNo, dateOut, dateDue, borrowerNo)

Formulate the following queries in relational algebra:

5.24 List all book titles

5.25 List all book titles published in the year 2012.

5.27 List all copies of book titles that are available for borrowing.

5.30 List the names of borrowers with overdue book.s

Consider the schemas of the following relational database for a company. The company has different departments at different cities in different states:

employee(employee-id, dept-id, name, street-num, street-name, city, state, zip, salary)

department(dept-id, dept-name, city, state)

manager(manager-id, employee-id)

NOTES:

manager-id in the manager relation is a foreign key to the employee relation.

employee-id in the manager relation is a foreign key to the employee relation.

dept-id in the employee relation is a foreign key to the department relation.

An employee belongs to a single manager only. That is, an employee only works for one manager. Some employees do not have a manager (in that case, they do not have an entry in the manager relation).

Write SQL statement (no computer work is needed) for each of the following queries.

1. Find all managers (manager-ids and names) who’s department located in California (state = ‘CA’).

1. Find all employees (IDs and names) in the database who do not work for the Research Department.

1. Anita Jones got married and she wanted to change her name to Anita Smith. Modify the database so that Anita Jones becomes Anita Smith (her employee-id is 987654321).

1. Delete all tuples in the manager relation for manager-id = 123456789.