Case Study 4

Husam Trading Company is in the business of buying and selling of different types of electronics products in Nizwa region and provided the following data to understand the cash position every month start from January to July. The sales book reported the sales amount for seven months as below: -

The sales reported every month including cash sales and credit sales. Cash sales constitute 50% of total sales collected in the month of sales and the balance is credit sales received in two months following the month of sales.

The detail of goods purchased in cash during seven months reported in purchase book as below: -

Company also purchased goods on credit from different suppliers. The detail of credit purchase from the month January to July is given below: -

Cash purchases payable in the month of purchases and credit purchases are payable to supplier in two months following the month of credit purchase.

It is also found from the accounting records that the company purchased plant and equipment for RO 15,000 in the month of March and it is payable in three equal instalments starting from April. Tax department has sent a notice to the company to pay taxes of RO 2,000 each in the month from May, June and July.

The wages and office expenses are paid in the month following the month in which wages and office expenses incurred. The detail of wages and office expenses is given below: -

The selling expenses of the company recorded for the seven months are as follows: -

The company also incurred administrative expenses for the period January to July. The detail of administrative expenses is given as below: -

The company is paying the selling expenses in one month following the month in which such expenses incurred and administration expenses in two months following the month in which such expenses incurred.

The cash balance as on 1^st April is RO 27,500.

Requirement: The Company has requested you to prepare Cash budget for the period of April to June.                                                                                                                               

1. You are evaluating a small project for your company. The idea is to introduce a new, but short lived, new product. Sales over the 6 year useful life of the project will be 100,000 units, 120,000 units, 110,000 units, 100,000 units, 70,000 units and 70,000 in each of the 6 years. The price will fluctuate each year, with the pattern being $16, $18, $17, $14, $14 and $14. The cash operating expenses will be, on a per unit basis, $7, $8, $10, $8, $7 and $7. The project will require two pieces of equipment. The Loader will cost $500,000 installed, and the Stamper will cost $1,000,000 installed. Both will be depreciated using straight line depreciation over the 6 year useful life of the project. At the end of the project’s useful life, the Loader will be sold for $100,000 and the Stamper will be sold for $200,000. In addition, an investment in NWC will be required initially at a cost of $250,000, and at the end of the project’s life this investment will be returned. The tax rate is 40%, and your cost of capital is 13%. What is the IRR for the project? What is the MIRR for the project? Should the project be accepted? Assume that your worst case analysis is that all prices are $1 lower than your base case analysis. Does this change the IRR estimate? Is the project still acceptable?

Cindy, who will graduate from college in a year is deciding whether to go on for her master’s degree which will last two years. She figures that if she takes a job immediately, she can earn $40,000 per year in real terms for the remainder of her working years. If she goes on for two more years of graduate study, however, she can increase her earnings to $50,000 per year. The cost of tuition is $40,000 per year in real terms. Is this a worthwhile investment if the real interest rate is 5% per year?—(Assume she will retire after working for 40 years. AND SHOW YOUR WORK)

2.    C = 50 + .8YD = 50 + .8(Y – T)

        I = 150

        G = 200

        T = 200

a)   Calculate ∆Y if ∆G = 100 (assuming that G could change all by itself).

b) Calculate ∆Y if ∆T = 100 (assuming that T could change all by itself).

c) Calculate ∆Y for ∆G = ∆T = 100. Show that you could have predicted this result from your answers to parts a and b.

2. How many ways can seven colored beads be arranged (a) on a straight wire, (b) on a circular necklace? (Hint: think about the kinds of manipulations that would or would not result in a “distinguishable” configuration of beads) 3. How many distinguishable five-card poker hands are possible? Note that reordering the cards in your hand does not change the nature of the hand.

3. How many distinguishable five-card poker hands are possible? Note that reordering the cards in your hand does not change the nature of the hand.

6. A firm has to choose seven people from its R and D team of ten to send to a conference on computer systems. How many ways are there of doing this (a) when there are no restrictions? (b) when two of the team are so indispensable that only one of them can be permitted to go? (c) when it is essential that a certain member of the team goes?

Central Tendency and Variation Activity

1. Roll 4 dice 40 times, recording the sum for each roll.   Do it again so you have two groups of 40 numbers

2. Calculate the mean, median, mode, and midrange for both sets of data. The four numbers should be close to one another for each data set. Write a sentence or two accounting for any discrepancies.

3. Calculate a 5 number summary for both sets of data (it may help to create a tally chart or stem and leaf plot for both sets of data. Write a sentence or two describing any differences between the two sets of number and offer reasons for the discrepancy.

4. Calculate the standard deviation for both sets of data. Which data set is more spread out? Why is this so?       

Pharmacology Dosage

1. Order – Furosemide 40 mg po daily

Available – Furosemide 20 mg/tablet

How many tablets will the nurse administer?

Answer: ________________________________

2. Order – 1000 mL D5W over 6 hours

Available – 1 liter bags D5W; IV tubing with a drop factor of 10 gtt/mL

Calculate the flow rate in gtt/min.

Answer: ________________________________

3. Order – Normal Saline 200 mL over 2 hours

Available – 500 mL and 1 Liter bags Normal Saline; IV tubing with a drop factor of 20 gtt/mL

Calculate the flow rate in gtt/min

Answer: ____________________________

4. Order – Gentamicin 55 mg IM every 8 hours

Available – Gentamicin 80 mg per 2 mL

Calculate how many mL the nurse will administer for one dose?_________________________

Calculate how many mL the nurse will administer for one day?__________________________

5. Order – Ampicillin 750 mg IVPB every 4 hours

Available – Ampicillin 2 gm in 5 mL

Calculate how many mL the nurse will administer for one dose?_________________________

Calculate how many mL the nurse will administer for one day?_________________________

6. Order – 500 mL Normal Saline at 60 mL/hour. How long will it take for the infusion to complete?_________________________ If the IV is started on Monday at 2000, when will it be complete (day of week; military time)?_________________________

7. Order – Gentamicin 50 mg IVPB every 8 hours for a child weighing 40 pounds

Recommended dosage – 6 – 7 mg/kg/day in divided doses every 8 hours

Is this dose safe? Why or why not?

Answer: ____________________________________________________________

8. Order – Phenobarbital 10 mg po every 12 hours for a child weighing 9 pounds

Recommended dosage – 3 – 5 mg/kg/day administered every 12 hours

Is this dose safe? Why or why not?

Answer: ___________________________________________________________

9. Order – KCl 20 mEq po now

Available – KCl 8 mEq per 5 mL

How many mL will the nurse administer?

Answer: ____________________________

10. Order – Zovirax 1 gm po now

Available – Zovirax 200 mg/tablet

How many tablets will the nurse administer?

Answer: ____________________________

11. Order – Amoxicillin 325 mg po T.I.D.

Available – Amoxicillin 250 mg/mL

How many mL will the nurse administer?

Answer: ___________________________

12. Order – Heparin 12,000 units SQ now

Available – Heparin 5000 units/mL

How many mL will the nurse administer?

Answer: ___________________________

13. Order – Keflex 500 mg IM every 8 hours

Available – Keflex 3 gm/4 mL

How many mL will the nurse administer for one dose?

Answer: ______________________________

14. Order – Cefazolin 0.3 gm IM

Available – Cefazolin 500 mg powder with the instruction to add 2 mL sterile water to obtain a concentration of 225 mg/mL

How many mL will the nurse administer?

Answer: ______________________________

15. Order – Carbamazepine 400 mg po B.I.D.

Recommended dosage – 15 – 20 mg/kg/dose. Child weighs 55 pounds.

Is this dose safe? Why or why not?

Answer: _______________________________________________________________

16. Order – Erythromycin 62.5 mg po every 6 hours

Recommended dosage – 30 – 50 mg/kg/day

Child weighs 11 pounds

Is this dose safe? Why or why not?

Answer: _________________________________________________________________

17. Order – Digoxin 18 mcg po B.I.D.

Recommended dosage – 10 – 12 mcg/kg/day

Child weighs 7 pounds

What is the safe dosage range (round to one decimal place)?__________________

Is the ordered dose safe for the 24-hour period? Why or why not?_________________   

If the medication is available digoxin 50 mcg/mL, how many mL will the nurse administer for one dose? __________________

18. Order – Synthroid 200 mcg po daily

Available – Synthroid 0.4 mg/tablet

How many tablets will the nurse administer?

Answer: _______________________

19. Order – Oxacillin 300 mg IM every 8 hours

Available – Oxacillin 2 gm/5 mL

How many mL will the nurse administer for one dose?_________________________

How many mL will the patient receive in one day? __________________________

20. Order – Fentanyl 0.1 mg IM now

Available – Fentanyl 50 mcg/mL

How many mL will the nurse administer?

Answer: ________________________________________

Let x be a random variable that represents the percentage of successful free throws a professional basketball player makes in a season. Let y be a random variable that represents the percentage of successful field goals a professional basketball player makes in a season. A random sample of n = 6 professional basketball players gave the following information.

x   67   64   75   86   73   73
y   44   40   48   51   44   51

(a) Find Σx, Σy, Σx2, Σy2, Σxy, and r. (Round r to three decimal places.)
Σx =   438
Σy =   278
Σx2 =   32264
Σy2 =   12978
Σxy =   20429
r =  

(b) Use a 5% level of significance to test the claim that ρ > 0. (Round your answers to two decimal places.)
t =  
critical t =  

Conclusion
A- Reject the null hypothesis, there is sufficient evidence that ρ > 0.
B-Reject the null hypothesis, there is insufficient evidence that ρ > 0.
C-Fail to reject the null hypothesis, there is insufficient evidence that ρ > 0.
D-Fail to reject the null hypothesis, there is sufficient evidence that ρ > 0.

(c) Find Se, a, b, and x. (Round your answers to four decimal places.)
Se =  
a =  
b =  
x =  

(d) Find the predicted percentage ŷ of successful field goals for a player with x = 80% successful free throws. (Round your answer to two decimal places.)

(e) Find a 90% confidence interval for y when x = 80. (Round your answers to one decimal place.)
lower limit = ?
upper limit =?

(f) Use a 5% level of significance to test the claim that β > 0. (Round your answers to two decimal places.)
t =  
critical t =  

Conclusion
A-Reject the null hypothesis, there is sufficient evidence that β > 0.
B-Reject the null hypothesis, there is insufficient evidence that β > 0.
C-Fail to reject the null hypothesis, there is insufficient evidence that β > 0.
D-Fail to reject the null hypothesis, there is sufficient evidence that β > 0.

2) Given the rising price of commodities, I have found it profitable to melt my copper pennies for scrap. I’ve saved about 150 kg of them, and I get down to business. The melting point of copper is 1085 degrees Celsius. However, my stove runs out of fuel after putting out only 28,450,000 J of heat.

A. Assuming the pennies started at 20 degrees Celsius, what percentage has melted and how much is still solid?

B. 1 kilogram of propane delivers 40,000,000 J of heat when burned. How much more propane do I need?

I didn't know , how to write this code

// This file is part of www.nand2tetris.org
// and the book "The Elements of Computing Systems"
// by Nisan and Schocken, MIT Press.
// File name: projects/04/Fill.asm

// Runs an infinite loop that listens to the keyboard input.
// When a key is pressed (any key), the program blackens the screen,
// i.e. writes "black" in every pixel;
// the screen should remain fully black as long as the key is pressed.
// When no key is pressed, the program clears the screen, i.e. writes
// "white" in every pixel;
// the screen should remain fully clear as long as no key is pressed.

// Put your code here.