3-) A heat exchanger with 1 body - 4 pipe passages and each pipe (100+ ??) (with a diameter of 2.6 cm each, 4 m long thin wall per pass) will be used to heat the air. Water enters the pipes with a mass flow of 8 kg / s at 350 K temperature, and air enters the body at a temperature of 15 C with a mass flow of 18 kg / s. The pollution factor of the sediment formed inside the pipe over time is 0.0026 m'K / W. Transport coefficients on the inner and outer surfaces of the pipes are estimated at 450 and 200 W / m'K, respectively. Using specific temperatures at 25 ° C for air and water (?? = school no. Last two digits, for example 0611002072; ?? = 72, ie 172 units), a-) the efficiency of the heat exchanger by drawing the shape of the problem, b-) Heat transfer rate ( kW), c-) Calculate the outlet temperatures (C) of the water and air and show the temperatures in the T_L diagram.

28 will be written instead of a question mark

Problems 1-4 assume a normally distributed population with a mean = 48 and standard deviation = 5. Be sure to sketch the curve, include formulas & work, round appropriately, and circle your final answer.

1. What percent of the scores fall:

at or below 54?

at or above 40?

2. (6 points) What proportion of scores lie between:

31 and 48?

31 and 54?

3. (4 points) Suppose we took a sample of 5000 scores from this distribution.

Of those 5000 scores, how many would you expect to lie between31 and 48?

Of those 5000 scores how many would you expect to lie between 31 and 54?

4. If you select one person at random from this population and find his/her score on this variable to be 63 would you be surprised (yes/no)? Why/why not?

5. (4 points) Later in the semester we will focus on z-scores that capture the middle 95% of the distribution.
   1. Find the two z-scores that capture the middle 95% of the distribution. Be sure to show your work. (Hint: remember that the normal curve is symmetrical.)

What two z-scores would we use if we want to capture the middle 99% of the distribution?

What is the other error that this engagement letter is missing?

October 30, 2018

Mr. Donald Phillips, President

36 Clearwater Lake Road

Ocean City, Florida 33140

Dear Mr. Phillips:

You have requested that we audit the financial statements of Oceanview Marine Company, which comprise the balance sheet for December 31, 2018, and the related statements of income, changes in stockholders’ equity, and cash flows for the year then ended, and the related notes to the financial statements. We are pleased to confirm our acceptance and understanding of this audit engagement by means of this letter. Our audit will be conducted with the objective of our expressing an opinion on the financial statements.

We will perform our audit in accordance with auditing standards generally accepted in the United States of America (GAAS). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statement are free from material misstatement and determine whether it was due to fraud or error. An audit involves performing procedures to obtain audit evidence about the amounts and disclosures in the financial statements. The procedures selected depend on the auditor’s judgment, including the assessment of the risk of material misstatement of the financial statements. An audit also includes evaluating the appropriateness of accounting policies used and the reasonableness of significant accounting estimates made by management, as well as evaluating the overall presentation of the financial statements.

Because of the inherent limitations of and audit, together with the inherent limitations of internal control, an unavoidable risk that some material misstatements may not be detected exists, even though the audit is properly planned and performed in accordance with GAAS.

In making our risk assessments, we consider internal control relevant to the entity’s preparation and fair presentation of the financial statements in order to design audit procedures that are appropriate in the circumstances but not for the purpose of expressing an opinion on the effectiveness of the entity’s internal control. However, we will communicate to you in writing concerning and significant deficiencies or material weaknesses in internal control relevant to the audit of the financial statements that we have identified during the audit.

Our audit will be conducted on the basis that the management of Oceanview Marine Company acknowledges and understands that it has responsibility for

1. the preparation and fair presentation of the financial statements in accordance with accounting principles generally accepted in the United States of America;
2. the design, implementation and maintenance of internal control relevant to the fair presentation of the financial statements that are free from material misstatement, whether due to fraud or error.
3. to provide us with access to all information of which management is aware that is relevant to the preparation of the financial statements such as records, documentation, and other matters; additional information that we may request from management for the purpose of the audit; and unrestricted access to persons within the entity from whom we determine it necessary to obtain audit evidence.

As part of our audit process, we will request from management written confirmation concerning representations made to use in connection with the audit.

We will issue a written report upon completion of our audit of Oceanview Marine Company’s financial statements. Our report will be addressed to the board of directors of Oceanview Marine Company. We cannot provide assurance than an unmodified opinion will be expressed. Circumstances may arise in which it is necessary for us to modify our opinion, add an emphasis-of-matter or other-matter paragraph, or withdraw from the engagement.

The timing of our services is scheduled for performance and completion as follows:

            Begin interim fieldwork                        December 1, 2018

            Completion of fieldwork                       March 15, 2019

            Delivery of management letter              March 22, 2019

            Delivery of audit report                         March 29, 2019

            Delivery of tax returns                          March 29, 2019

Our fees will be based on our standard hourly rates. Invoices will be submitted periodically as the work progresses and are payable upon presentation. Should we find any conditions that could significantly affect our initial estimated total fees of $32,000, we will notify you immediately.

Please sign and return the attached copy of this letter to indicate your acknowledgement of, and agreement with, the arrangements for our audit of the financial statements including our respective responsibilities.

Yours very truly,

Charles Ward          

Charles Ward, CPA

Partner

Per:    Donald Phillips     

Donald Phillips, President

Oceanview Marine Company

       November 10, 2018

1. Use the following information to work Problems (1) through (4):

You work for a lab that is considering leasing diagnostic equipment. The cost of the equipment is $6,300,000, and it would be depreciated straight-line to zero over four years. The equipment will be completely valueless in four years. You can lease it for $1,875,000 per year for four years.

1. Assume that the tax rate is 35 percent. You can borrow at 8 percent before taxes. Should you lease or buy?
2. What would the lease payment have to be for you to be indifferent about the lease?   
3. Assume that your company does not anticipate paying taxes for the next several years (you can not use the tax shield from leasing payment or asset depreciation; the cost of debt is the same as pretax cost). What are the cash flows from leasing in this case? Should you lease or buy?
4. Rework Problem 1 assuming that the scanner will be depreciated as three-year property under MACRS.

answer each question in one paragraph ( 4 sentences )

1- What is a skills profile and what is it used for?

2- Describe the purpose of the income statement, the balance sheet, and the statement of cash flows.

3- What is SCORE? What is its role in helping a firm fill out its new venture team?

1. What would the EP weight be for a 40 lb roast if 7 lb 4 oz are lost through trimming and cutting. Calculate the AP, EP and W percentages. How many 6 oz servings can you get from the EP weight?

AP weight: _________ AP%: __________ EP weight: _________ EP%: __________ W weight: _________ W%: __________ Number of Servings: ________

2. What would the EP weight be for a roast weighing 40 lb and a waste percentage of 18.06%? Calculate the remaining weights and percentages. How many 8 oz servings will you get from the EP weight?

AP weight: _________ AP%: __________ EP weight: _________ EP%: __________ W weight: _________ W%: __________ Number of Servings: ________

1. In the command fprintf within the string statement what operator executes a linefeed?

() (4 points).

A. \n B. \l C. \d D. /n

2. To multiply two arrays element-by-element, what operator must you use? ( ) (4 points).

A. + B. * C. .* D. ./

3. The default base of log function in MATLAB is ( ) (4 points).

A. e B. 2 C. 10 D. 5

4. Which one of the following is a valid placeholder in an fprintf statement ( ) (4

points).

A. %d B. %n C. %p D. %r E. %v

5. Which of the following names is NOT a valid name for a user-defined function? ( )

(4 points).

A. Poker B. Bla4jack C. Solitare8 D. Card-Pickup

6. If mathematical expressions are written in MATLAB without required parentheses,

operations start from left to right in order. (True or False) ( ) (4 points).

7. A MATLAB code is saved with .m extension while functions are saved with .f

extension. (True or False) ( ) (4 points).

8. Every variable used in a MATLAB code appears in the workspace until they are

cleared. (True or False) ( ) (4 points).

9. MATLAB automatically puts comments in our codes when we create codes and save

them in an M-File. (True or False) ( ) (4 points).

10. A function must return numerical outputs. (True or False) ( ) (4 points).

11. Write commands to generate a 3x5 array containing random numbers between 1 to 21 and then assign this array to A. Transpose A and assign to B. Sort the rows of B based on the 2nd column in a descending order and assign it to C. (15)

12. Write commands to create the following graph using the following parameters. All the elements in the graph must be addressed by commands. (20

-? < ? < ?

Y=sin(?),

Z=log(?).

13. According to the trajectory line (below), the height(m) y=v0sin(?)t-gt2/2. Given the initial velocity is 2 m/s, please write a user-defined function to calculate the initial ? degree, and write commands to test your function program to calculate ? in degree when height=0.0786 m and t=0.2 s. (25)

As- sume that the box contains 10 balls: 4 red, 5 blue, and 1 yellow. As in the text, you draw one ball, note its color, and if it is yel- low replace it. If it is not yellow you do not replace it. You then draw a second ball and note its color.

(1) What is the probability that the second ball drawn is yel low?

(2) What is the probability that the second ball drawn is red?

(1 point) An 4-kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. Assume that the spring constant is 20 N/m and the damping constant is 2 N-sec/m. At time t=0t=0, an external force of F(t)=2cos(2t+π4)F(t)=2cos⁡(2t+π4) is applied to the system. Formulate the initial value problem describing the motion of the mass and determine the amplitude and period of the steady-state solution.

Let y(t)y(t) to denote the displacement, in meters, of the mass from its equilibrium position. Set up a differential equation that describes this system. (give your answer in terms of y,y′,y′′y,y′,y″).