Paragon Tech Company, a communications equipment manufacturer, recently fell victim to a fraud scheme developed by one of its employees. To understand the scheme, it is necessary to review Paragon Tech’s procedures for the purchase of services. The purchasing agent is responsible for ordering services (such as repairs to a photocopy machine or office cleaning) after receiving a service requisition from an authorized manager. However, since no tangible goods are delivered, a receiving report is not prepared. When the Accounting Department receives an invoice billing Paragon Tech for a service call, the accounts payable clerk calls the manager who requested the service in order to verify that it was performed. The fraud scheme involves Mae Jansma, the manager of plant and facilities. Mae arranged for her uncle’s company, Radiate Systems, to be placed on Paragon Tech’s approved vendor list. Mae did not disclose the family relationship. On several occasions, Mae would submit a requisition for services to be provided by Radiate Systems. However, the service requested was really not needed, and it was never performed. Radiate Systems would bill Paragon Tech for the service and then split the cash payment with Mae. Explain what changes should be made to Paragon Tech’s procedures for ordering and paying for services in order to prevent such occurrences in the future.

Announcements for 84 upcoming engineering conferences were randomly picked from a stack of IEEE Spectrum magazines. The mean length of the conferences was 3.94 days, with a standard deviation of 1.28 days. Assume the underlying population is normal. a. In words, define the random variables X and $\bar{X}.$ b. Which distribution should you use for this problem? Explain your choice. c. Construct a 95% confidence interval for the population mean length of engineering conferences. i. State the confidence interval. ii. Sketch the graph. iii. Calculate the error bound.

The Heaviside function H(x) is widely used in engineering applications.

$$H(x)= \begin{cases}1, & x \geq 0 \\ 0, & x<0\end{cases}$$

Sketch the graph of the Heaviside function and the graphs of the following functions by hand.

H(x-2)

An engineering student bought a car at a local used car lot. Including tax and insurance, the total price was $15,000. He is to pay for the car in 13 equal monthly payments, beginning with the first payment immediately (the first payment is the down payment). Nominal interest on the loan is 12%, compounded monthly. After six payments he decides to sell the car. A buyer agrees to pay off the loan in full and to pay the engineering student$2000. If there are no penalty charges for this early payment of the loan, how much will the car cost the new buyer?

Engineering Application You have a job digging holes for posts to support signs for a Louisiana restaurant (called Mosca's). Explain why the higher above the ground a sign is mounted, the farther the posts should extend into the ground.

The cash payments journal for High Tech, Inc., is given in the Working Papers.

1. Journalize the following transactions completed during the current year. Use page 1 of a cash payments journal. The abbreviation for a check is C.

Transactions:

Jan. 4. Paid cash for a trademark, $35,000.00. C112.
     6. Paid cash for a patent,$98,000.00. C115.

Paragon Tech Company, a communications equipment manufacturer, recently fell victim to a fraud scheme developed by one of its employees. To understand the scheme, it is necessary to review Paragon Tech's procedures for the purchase of services.

The purchasing agent is responsible for ordering services (such as repairs to a photocopy machine or office cleaning) after receiving a service requisition from an authorized manager. However, because no tangible goods are delivered, a receiving report is not prepared. When the Accounting Department receives an invoice billing Paragon Tech for a service call, the accounts payable clerk calls the manager who requested the service in order to verify that it was performed.

The fraud scheme involves Mae Jansma, the manager of plant and facilities. Mae arranged for her uncle's company, Radiate Systems, to be placed on Paragon Tech's approved vendor list. Mae did not disclose the family relationship.

On several occasions, Mae would submit a requisition for services to be provided by Radiate Systems. However, the service requested was really not needed, and it was never performed. Radiate Systems would bill Paragon Tech for the service and then split the cash payment with Mae.

Explain what changes should be made to Paragon Tech's procedures for ordering and paying for services in order to prevent such occurrences in the future.

Identify the spelling errors and errors in the use of numbers in the following paragraph. Then, write the correct spellings and numbers.

Women have exceled in all kinds of railroad work, from domestic service jobs to engineering and executive jobs.

Two annual income statements for Hi-Tech Aluminum Co. showed these figures.

High Tech Electronics advertises a weekly installment plan for the purchase of a popular brand of high definition television. The buyer pays $5 at the end of the first week,$5,50 at the end of the second week, $6.05 at the end of the third week, and so on for one year. (Assume 1 yr = 52 wk.) Find the total cost of the TV.

Engineering economic analysis can be described by the following statement: (a) Involves a systematic analysis of relevant costs and benefits. (b) Involves a comparison of competing alternatives. (c) Supports a rational economic decision-making objective. (d) All of the above

A certain mechanical component is heat treated using carburization. A commonly encountered engineering problem is that we need to machine a certain part of the component and this part of the surface should not be hardened. Explain how we can achieve this objective.

On a website devoted to answering engineering questions, viewers were invited to determine how much power a 100-MW power plant generates annually. The answer declared to be best was submitted by a civil engineering student, who stated, “It produces 100 MW/hr so over the year that’s $100^{*} 24^{*} 365.25$ & do the math." a) Carry out the calculation, showing all the units. b) What is wrong with the statement of the question? c) Why was the student wrong in saying that the plant produces 100 MW/hr?

A key component in many chemical engineering designs is the separation of mixtures of chemicals.

(a) What happens to the entropy of the system when a chemical mixture is separated?

(b) Are designs for chemical separation more likely to rely on spontaneous or nonspontaneous processes?