8. What two circuits are used to generate the IF? (Intermediate Frequency)

62. The synthesizer in a transceiver usually generates what
frequencies?

An observational study of a group of students was conducted, and students were classified in two ways. First, they were each classified as to whether or not they were FullTime or PartTime. Second, they were each classified as to which of two colleges they were in, COS (college of sciences) or CBA (college of business administration). From that data, the following partial joint probability table was constructed.

Please answer the following questions about the probability of drawing students at random from this group according to the table above.  Please keep your answers as fractions (e.g., "3/7").

• What is the marginal probability that a random student will be from COS (college of science)?  
• What is the joint probability that a random student will be both part-time and from CBA (college of business administration)?
• If I already know the student is from CBA, what is the probability they are a full time?

Sales of tablet computers at Ted​ Glickman's electronics store in​ Washington, D.C., over the past 10 weeks are shown in the table​ below:                                                                                                                     Week 1 2 3 4 5 6 7 8 9 10 Demand 21 21 28 36 26 29 35 20 25 30 ​a)

The forecast for weeks 2 through 10 using exponential smoothing with alpha ​= 0.55 and a week 1 initial forecast of 21.0 are ​(round your responses to two decimal​ places): Week 1 2 3 4 5 6 7 8 9 10

Demand 21 21 28 36 26 29 35 20 25 30

Forecast 21.0 21 21 24.85 30.98 28.24 28.65 32.14 25.46 25.20 ​

b) For the forecast developed using exponential smoothing ​(alpha ​= 0.55 and initial forecast 21.0​), the MAD​ = nothing sales ​(round your response to two decimal​ places).

C. Tracking signal

Create a function called merge that takes two int vectors (x and y) as argument and returns an int vector (z) that is the result of merging the two vectors x and y. Here is an example to explain how the merge function works: If the vector x has the following values: 1 2 3 4 5, and the vector y has the following: 6 7 8 9 10 11 12, then the merging vector z will have: 1 6 2 7 3 8 4 9 5 10 11 12. This means: z[0] = x[0], z[1]=y[0], z[2]=x[1], z[3]=y[1], z[4]=x[2], z[5]=y[2],... If the size of the vector x is bigger than the size of the vector y, when x is entirely copied to z, the rest of x will be copied next. If y is bigger, the rest of y is copied when x is entirely copied to z.

Language: c++

Suppose these data show the number of gallons of gasoline sold by a gasoline distributor in Bennington, Vermont, over the past 12 weeks.

(a)

Compute four-week and five-week moving averages for the time series.

(b)

Compute the MSE for the four-week moving average forecasts. (Round your answer to two decimal places.) __________

Compute the MSE for the five-week moving average forecasts. (Round your answer to two decimal places.) ____________

Influential genes and proteins in dairy cattle:

Genetic methods have been used to examine regions of the dairy cattle genome that appear to have been under selection. A positive signature of selection in a given region implies the genes contained therein are potentially important for aspects of milk production such as yield.

Two such genes found to be of importance in dairy cattle are DGAT1 (which encodes the fat biosynthesis enzyme diacylglycerol o-acyltransferase 1) and GHR (which encodes the growth hormone receptor).

44. Why might these two genes be important for milk production?

1. Suppose there are two bonds for sale; Bond A with 7-years to maturity, paying a semi-annual interest payment of $57.75, and available for purchase at $1,017.63; and a second bond for sale at $989.54, maturing in 5-years, and paying $63.65 on a semi-annual basis. What is the YTM of the two bonds? And which one will you add to your portfolio based on the highest yield to maturity?

2. Given the following cashflows, calculate both the NPV and the IRR for a project with a 7% cost of capital.

Initial Outlay = $100,000

Year 1 = $50,000

Year 2 = $40,000

Year 3 = $30,000

Year 4 = $10,000

Macheski Company, an importer and retailer of Polish pottery and kitchenware, prepares a monthly master budget. Data for the July master budget are given below:

The June 30th balance sheet follows:

Cash                                        $ 25,000                      Accounts payable             $ 45,000

Accounts receivable               110,000                      Capital stock             300,000

Inventory                                    54,000                      Retained earnings                94,000

Building and equipment (net) 250,000

Actual sales for June and budgeted sales for July, August, and September are given below:

June                                         $137,500

July                                           360,000

August                                       400,000

September                                 320,000

Sales are 20 percent for cash and 80 percent on credit. All credit sales are collected in the month following the sale. There are no bad debts.

The gross margin percentage is 40 percent of sales. The desired ending inventory is equal to 25 percent of the following month's COGS. One fourth of the purchases are paid for in the month of purchase and the others are purchased on account and paid in full the following month.

The monthly cash operating expenses are $43,000, and the monthly depreciation expenses are $7,000.

8. Refer to Figure 8-7. What is the balance of the accounts receivable at the end of July?

a. $110,000

b. $288,000

c. $360,000

d. $398,000

9. Refer to Figure 8-7. What is the balance of the accounts payable at the end of July?

a. $55,500

b. $93,000

c. $120,000

d. $166,500

10. Refer to Figure 8-7. What is the balance of the inventory account at the end of July?

a. $54,000

b. $60,000

c. $124,000

d. $216,000

11. Refer to Figure 8-7. What is the balance of the building and equipment (net) account at the end of July?

a. $243,000

b. $250,000

c. $257,000

d. $300,000

13. Refer to Figure 8-7. What is the balance of the cash account at the end of July?

a. $8,500

b. $15,500

c. $62,500

d. $114,000

14. Refer to Figure 8-7. What are the total assets at the end of July?

a. $439,000

b. $446,500

c. $515,500

d. $653,500

The first question:- below is the expected cash flow of the two investment opportunities (Project A, Project B) available to Rafidain, if you know that the net investment initial investment of project (A) is JD 500,000, while the net investment for project B is 600,000 JD. The company intends to finance the net investment for both projects according to the following: 40% with long-term loans, interest rate 8%, 40% in ordinary shares, if you know that the risk-free rate is 2%, the existing risk premium is 10%, and the beta is 1.5%. And 20% financing with retained profits. The tax rate is 30%.
Project A: First year 200,000, second year 200,000, third year 150,000, fourth year 50,000.
The second project B: the first year 150,000, the second year 150,000, the third year 250,000, the fourth year 150,000.

REQUIRED ;- The two projects are required to be evaluated in the light of
1- The standard of the period of recovery
2 - the price of the profitability index.

A box contains one yellow, two red, and three green balls. Two balls are randomly chosen without replacement. Define the following events, and use them to find the conditional probabilities below.

A:{A:{ One of the balls is yellow }}
B:{B:{ At least one ball is red }}
C:{C:{ Both balls are green }}
D:{D:{ Both balls are of the same color }}

a) P(B¯¯¯¯|A)=

b) P(B¯¯¯¯|D)=

c) P(C|D)=

Suppose that E and F are events in the sample space with P(E∩F)=0.03, P(E|F)=0.1, and P(F|E)=0.2. Find the following probabilities.

a) P(E)=
b) P(F)=
c) P(E∪F)=