OJB Company began business in January, 2016. The following transactions occurred in February, 2016:

Feb 1      Purchased supplies on account, $ 400.

          2      Received cash from customers on account, $ 1,750.

3      Paid $ 400 on account.

5      Paid technician $ 750 in salary, including the amount owed at the end of January.

8      Billed customers for services provided on account, $ 3,200.

11     Paid cash for advertising on a local website, $ 300.

12     Received $ 3,875 cash for fees earned for jobs completed.

16     Paid electricity bill for the month, $ 290.

17     Received $ 8,200 cash for fees earned for jobs completed.

19     Paid technician $ 750 in salary.

20     Billed customers for services provided on account, $ 6,100.

22     Received cash from customers on account, $ 9,500.

25     Paid phone bill for the month, $ 120.

26     Received cash from customers as an advance payment for                                       technical support services to be provided in the future, $ 2,500.

27     Billed customers for services provided on account, $ 3,900.

28     Received cash from customers on account, $ 5,100.

28     OJB withdrew $8,000 for personal use.

INSTRUCTIONS:

The chart of accounts and the post-closing trial balance as of January 31, 2016 are given. For each account in the post-closing trial balance, enter the balance in the appropriate Balance column of the ledger. Date the balances February 1, 2016, and place a check mark ( ü ) in the Posting Reference column. Journalize each of the March transactions in the journal provided using OJB Company’s chart of accounts. (Do not insert the account numbers in the journal at this time).

Post the journal to the ledger.

Prepare an unadjusted trial balance.

At the end of March, the following adjustment data were assembled. Use this data to complete instructions ( 5 ) and ( 6 ):

Supplies on hand were $ 600.

Rent expired during the month was $ 1,600.

Unearned fees at the end of the month were $ 2,000.

Insurance expired during the month was $ 300.

Accrued salaries payable were $ 240.

Depreciation on equipment during the month was $ 330.

Optional: Enter the unadjusted trial balance on an end-of-period spreadsheet/worksheet and complete the worksheet.

Journalize and post the adjusting entries.

Prepare an adjusted trial balance.

Prepare an Income Statement, Statement of Owner’s Equity, and Balance Sheet.

Record and post the closing entries. Income Summary is account #33 in the chart of accounts. Indicate closed accounts in the ledger by inserting a line in both of the Balance columns opposite each closing entry.

10.Prepare a post-closing trial balance.

OJB COMPANY SERVICE CHART OF ACCOUNTS

OJB COMPANY

POST-CLOSING TRIAL BALANCE

JANUARY 31, 2016

                                                                                DEBIT     CREDIT

Accounts Receivable3,400

Prepaid Rent3,200

Prepaid Insurance1,500

Office Equipment14,500

Accumulated Depreciation330

Accounts Payable800

Salaries Payable120

Unearned Fees2,500

OJB, Capital                    42,300

                                                                                46,050    46,050

Hydropump, Inc. produces and sells high-quality pumps to business customers. Its marketing research shows a growing market for a similar type of pump aimed at final consumers-for use with jacuzzi-style tubs in home remodeling jobs. Hydropump will have to develop new channels of distribution to reach this target market because most consumers rely on a retailer for advice about the combination of tub, pump, heater, and related plumbing fixtures they need. Hydropump's marketing manager. Robert Black, is trying to decide between intensive and selective distribution. With intensive distribution, he wouid try to sell through all the plumbing supply, bathroom fixture, and hot-tub retailers who will carry the pump. He estimates that about 5,600 suitable retailers would be willing to carry a new pump. With selective distribution, he would focus on about 280 of the best hot-tub dealers (two or three in the hundred largest metropolitan areas). Intensive distribution would require Hydropump to do more mass selling-primarily advertising in home renovation magazines-to help stimulate consumer familiarity with the brand and convince retailers that Hydropump equipment will sell. The price to the retailer might have to be lower too (to permit a bigger markup) so they will be motivated to sell Hydropump rather than some other brand offering a smaller markup. With intensive distribution, each Hydropump sales rep could probably handle about 300 retailers effectively. With selective distribution, each sales rep could handle only about 70 retailers because more merchandising help would be necessary. Managing the smaller sales force and fewer retailers—with the selective approach-would require less manager overhead cost. Going to all suitable and available retailers would make the pump available through about 20 times as many retailers and have the potential of reaching more customers. However, many customers shop at more than one retailer before making a final choice-so selective distribution would reach almost as many potential customers. Further, if Hydropump is using selective distribution, it would get more in-store sales attention for its pump-and a larger share of pump purchases-at each retailer. Black has decided to use a spreadsheet to analyze the benefits and costs of intensive versus selective distribution.

d. Hydropump's marketing manager thinks that the type of channel relationship possible with selective distribution would make it possible to get a large share (40 percent) of the pumps sold by its hot-tub dealers. But he realizes that the actual percent might vary. He thinks that the percent could be as low as 35 percent, or go as high as 45 percent. He wants to evaluate the effect that this might have on expected profits. Do a What If analysis, based on the selective distribution alternative, varying Hydropump's percent of dealer unit sales between 35 percent and 45 percent and displaying Hydropump's unit sales and profit, and then complete the missing numbers in the table below.

g. With this change in the sales force, Hydropump's manager is confident that the firm will get at least 40 percent—and perhaps as high as 50 percent—of the pumps sold by the dealers. Evaluate Hydropump's likely profit in this situation—and then compare it with your previous analysis (above). Would you recommend that Hydropump add the extra sales reps? Discuss your reasons.

SPREADSHEET FOR CALCULATIONS

A multiple regression model is to be constructed to predict the final exam score of a university student doing a particular course based upon their mid-term exam score, the average number of hours spent studying per week and the average number of hours spent watching television per week.

Data has been collected on 30 randomly selected individuals: hide data

Download the data

a)Find the multiple regression equation using all three explanatory variables. Assume that X₁ is mid-term score, X₂ is hours studying per week and X₃ is hours watching television per week. Give your answers to 3 decimal places.

y^ =  + mid-term score + hours studying + hours watching television

b)At a level of significance of 0.05, the result of the F test for this model is that the null hypothesis isis not rejected.

For parts c) and d), using the data, separately calculate the correlations between the response variable and each of the three explanatory variables.

c)The explanatory variable that is most correlated with final score is:

mid-term score
hours studying per week
hours watching television per week

d)The explanatory variable that is least correlated with final score is:

mid-term score
hours studying per week
hours watching television per week

e)The value of R² for this model, to 2 decimal places, is equal to

f)The value of s_e for this model, to 3 decimal places, is equal to

g)Construct a new multiple regression model by removing the variable average hours spent watching television per week. Give your answers to 3 decimal places.

The new regression model equation is:

y^ =  + mid-term score + hours studying

h)In the new model compared to the previous one, the value of R² (to 2 decimal places) is:

increased
decreased
unchanged

i)In the new model compared to the previous one, the value of s_e (to 3 decimal places) is:

increased
decreased
unchanged

python and mathematical solution

Assume that you design a new affine cipher, where you encrypt three letters at a time, where your alphabet is

{'A':0, 'B':1, 'C':2, 'D':3, 'E':4, 'F':5, 'G':6, 'H':7, 'I':8, 'J':9, 'K':10, 'L':11, 'M':12, 'N':13, 'O':14, 'P':15, 'Q':16, 'R':17, 'S':18, 'T':19, 'U':20, 'V':21, 'W':22, 'X':23, 'Y':24, 'Z':25,     ' ':26, '.':27, ',': 28, '!': 29, '?':30}.

In other words, you group your plaintext message in trigrams (i.e., three-character words) and encrypt each trigram of the plaintext separately using this affine cipher. For example, if the first three letters of a plaintext is “THE” then it will be encoded as follows

THE -> 19×31×31 + 7×31 + 4 = 18480.

If the number of letters in the plaintext is not a multiple of three, you pad it with the letter “X” at the end. Determine the modulus and the size of the key space.

In a benchmark study, a fast food restaurant had an average service time of 2.1 minutes. Assume that the service time for the fast food restaurant has an exponential distribution. (Round your answers to four decimal places.) (a) What is the probability that a service time is less than or equal to one minute? (b) What is the probability that a service time is between 30 seconds and one minute? (c) Suppose the manager of the restaurant is considering instituting a policy such that if the time it takes to serve you exceeds four minutes, your food is free. What is the probability that you will get your food for free? If the manager is okay with 1% chance of customers receiving free food, does the policy seem like a good idea? The policy seems like a good idea as we would expect less than 1% of customers to receive free food. The policy does not seem like a good idea as we would expect more than 1% of customers to receive free food.

(a) According to Graduating Student and Alumni Survey in 2019, among the 1230 respondents, 180 said that they expected difficulty finding a job after graduation. If we can reasonably presume that the percentage of people expected difficulty will be between 15% and 25%, obtain a sample size that will ensure a margin of error of at most 0.02 for a 90% confidence interval.

(b) A recent survey of 254 customers, selected at random from a database with 12,861 customers, found that 202 are satisfied with the service they are receiving. Find a 99% confidence interval for the percentage satisfied for all customers in the database.

(c) Independent simple random samples of 400 Hong Kong women and 380 Macao women were taken. Of Hong Kong women, 318 were found to be in the labor force; of the Macao women, 276 were found to be in the labor force. At the 5% significance level, do the data suggest that the labor-force participation rate of Hong Kong women is higher? Use the P-value approach to perform a hypothesis test.

Computers Magazine has recently completed an analysis of its customer base. It has deter- mined that 75% of the issues sold each month are subscriptions and the other 25% are sold at newsstands. It has also determined that the ages of its subscribers are normally distributed with a mean of 44.5 and a standard deviation of 7.42 years, whereas the ages of its newsstand customers are normally distributed with a mean of 36.1 and a standard deviation of 8.20 years.

(a) Computers Magazine would like to make the following statement to its advertisers: “80% of our subscribers are between the ages of . . . and . . . .” Your job is to fill in the blanks, choosing a range that is symmetric around the mean. (In other words, the mean age of subscribers should be the midpoint of the range.) 1 plant manager of a manufacturing facility is concerned about drug use among plant

(b) What proportion of Computers Magazine newsstand customers have ages in the range you gave in (a)?

(c) What proportion of all of Computers Magazine customers have ages in the range you gave in (a)?

COURSE : IT Enterprise systems

Consider the following enterprise scenario and answer the following questions. ABC is a wholesale company that sells electrical equipment and provides a website from which customers can inquiry about products and identify what they want to buy. When costumers order electrical equipment, they place their order on the ABC website. ABC does not own or hold any equipment as inventory. Rather, the ABC orders the equipment from the appropriate supplier and ranges for the equipment to be shipped directly from the supplier to the customers. The customers pay ABC and receive receipts. The ABC also pays the suppliers and keeps the excess as revenues.

1. Create a value chain REA model that represents the flow of ABC's resources between the sales/collection process with other business processes.
2. Create a business process level REA model for ABC's sales/collection process. Be sure to include all relevant entities, relationships, and attributes.

note: NEED A UNIQUE ANSWER AND NO HANDWRITING PLEASE..

THANK YOU

1. The Cosmic Microwave Background and Prizewinning Cosmology

(a) How can we see the CMB if the photons were released 14 billion years ago? Shouldn't those photons be billions of light years away by now?

(b) Who was awarded the 2006 Nobel Prize for Physics? What was the prize for-- what were the results, and how were they obtained?

(c) Why are these results from part (b) important?

1. The Cosmic Microwave Background and Prizewinning Cosmology

(a) How can we see the CMB if the photons were released 14 billion years ago? Shouldn't those photons be billions of light years away by now?

(b) Who was awarded the 2006 Nobel Prize for Physics? What was the prize for-- what were the results, and how were they obtained?

(c) Why are these results from part (b) important?