A coal burning power plant in upstate New York has been the only provider of power in the region for many years. Recently, a plant that uses wind to create energy was built nearby. The wind plant produces less energy than the coal plant but at a lower cost. Will the coal plant be able to remain competitive in this new market environment?
A. Yes, if the coal plant sells energy at a price below its marginal cost.
B. Yes, if the coal plant's decreased output is still sufficient to recover costs.
C. No, the coal plant's customers will switch to the wind powered plant.
D. No, the coal plant will be forced to cut prices and operate at a loss.
Answer: B

One of the major problems with front office accounting at the Royal Crest Hotel is monitoring guest and non-guest accounts using their manual system. Management has always extended local businesses and government officials charge privileges, the idea being that, with the convenience of deferred payments, local patrons would be more likely to dine and/or host clients at the hotel. This program has proved to be highly successful. The volume of purchases charged to such non-guest accounts now approximates the level of sales incurred by registered guests. Unsure if this is a good or bad situation, Mr. Osei, the front office manager, requests the front office accounting staff to study the problem and to report its findings at next week's front office meeting. At the weekly front office meeting, the hotel's accountant, Ms. Pokua, reports that there are at least three problems related to the hotel's non- guest charge purchasing policies: its impact on the daily hotel audit, the billing procedures to collect payment, and the number of applications for additional non-guest accounts. When asked to be more specific, she begins with a review of the daily hotel audit. She states that since the front office receives charge vouchers from the hotel's revenue centers, it is the front desk agent's responsibility to separate guest from non-guest accounts. Since registered guest charges are posted by room number, one would think it easy to sort those charges from the others. Unfortunately, both the hotel's guest account numbers and the non-guest account numbers are three digits, thereby making the sorting more time-consuming. Mr. Osei asks if it is really necessary to separate the charges. Ms. Pokua explains that it is, since the hotel must maintain accurate guest folio Page 2 of 1 G. N. Baah balances. She further states that the non-guest vouchers are accumulated and posted on Saturday afternoons, when the hotel's business is less hectic. The billing procedures to collect non-guest account balances are tricky, Ms. Pokua said. Since the hotel bills non-guest accounts on the last day of each month, some charges occurring in a particular month may not be posted in time to appear on that month's bill. In addition, non-guest accounts usually are not paid in time. In fact, 47 percent of last month's non-guest account balances remain unpaid and tomorrow is the date of the next billing cycle. Mr. Osei explains that the local customers are important to the hotel and suggests that maybe Ms. Pokua is over-sensitive to the billing problems. Lastly, Ms. Pokua relates the fact that there are at least ten new applications for non-guest accounts. She has instructed her staff not to authorize any new non-guest accounts without her written approval. She further states that she is reluctant to authorize any additional non-guest accounts, and looks to Mr. Osei for advice. Convinced of the positive aspects of such business, Mr. Osei directs her to approve the requests and to assign account numbers effective the first day of next month.

1). State four things that could be done to improve collection of outstanding balances? .    

2). What are the two (2) advantages and two (2) disadvantages to having a high volume of non- guest accounts? NOTE; PLEASE I NEED DIFFERENT ANSWERS.

Let x be a random variable that represents the weights in kilograms (kg) of healthy adult female deer (does) in December in a national park. Then x has a distribution that is approximately normal with mean μ = 70.0 kg and standard deviation σ = 7.3 kg. Suppose a doe that weighs less than 61 kg is considered undernourished.

(a) What is the probability that a single doe captured (weighed and released) at random in December is undernourished? (Round your answer to four decimal places.)


(b) If the park has about 2650 does, what number do you expect to be undernourished in December? (Round your answer to the nearest whole number.)
does

(c) To estimate the health of the December doe population, park rangers use the rule that the average weight of n = 45 does should be more than 67 kg. If the average weight is less than 67 kg, it is thought that the entire population of does might be undernourished. What is the probability that the average weight

x

for a random sample of 45 does is less than 67 kg (assuming a healthy population)? (Round your answer to four decimal places.)


(d) Compute the probability that

x

< 71.2 kg for 45 does (assume a healthy population). (Round your answer to four decimal places.)

Let x be a random variable that represents the weights in kilograms (kg) of healthy adult female deer (does) in December in a national park. Then x has a distribution that is approximately normal with mean μ = 60.0 kg and standard deviation σ = 8.4 kg. Suppose a doe that weighs less than 51 kg is considered undernourished.

(a) What is the probability that a single doe captured (weighed and released) at random in December is undernourished? (Round your answer to four decimal places.)

(b) If the park has about 2350 does, what number do you expect to be undernourished in December? (Round your answer to the nearest whole number.)

(c) To estimate the health of the December doe population, park rangers use the rule that the average weight of n = 50 does should be more than 57 kg. If the average weight is less than 57 kg, it is thought that the entire population of does might be undernourished. What is the probability that the average weight x for a random sample of 50 does is less than 57 kg (assuming a healthy population)? (Round your answer to four decimal places.)

(d) Compute the probability that x < 61.2 kg for 50 does (assume a healthy population). (Round your answer to four decimal places.)

Most armadillos of the genus Dasypus give birth to four monozygotic young (i.e., identical quadruplets).

Which statement is correct?

A random variable that could be studied while monitoring this species could be the number of male young born.

Because there are four babies, the probability of four males or four females must be 1/4 .

Because the young are all identical, there is no randomness.

In the long run, an equal number of males and females will be born.

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Parking is often a challenge, and it is also expensive to park on many college campuses. It is very tempting to park without paying, but there is a risk of getting a ticket. Based on empirical data, here is a probability table that quantifies the chances of various outcomes.

Which statement is not true?

Suppose you park for two days and that the probability above is the same for both days and each day’s outcome does not affect the other day’s outcome. The probability that you will have no ticket over this two‑day period is 0.36.

You parked on campus from Monday to Thursday and did not receive a ticket. Then the probability of no ticket on Friday (assuming each day’s events are independent) is still 0.40.

The probability of being towed is 0.10.

The probability that you will be fined or towed is 0.20.

Jose and Emily work as auditors for the state of Texas. They have been assigned to the audit of the Lone Star School District. There have been some problems with audit documentation for the travel and entertainment reimbursement claims of the manager of the school district. The manager knows about the concerns of Jose and Emily, and he approaches them about the matter. The following Conversations takes place:

Manager: Listen, I've requested the documentation you asked for, but the hotel says it's no longer in its system.

Jose: Don't you have the credit card receipt or credit card statement?

Manager: I paid cash.

Jose: What about a copy of the hotel bill?

Manager: I threw it out.

Emily: That's a problem. We have to document all your travel and entertainment expenses for the city manager's office.

Manager: Well, I can't produce documents that the hotel can't find. What do you want me to do?

Questions: Multiple Choice

The manager seems to be failing in regard to which Pillar of Character?

A. Caring

B. Respect

C. Responsibility

D. Fairness

If Jose and Emily decide to report this incident to the school, they would be operating under which Pillar of Character?

A. Caring

B. Respect

C. Responsibility

D. Fairness

1. You have been provided information on summary statistical data for two neighborhoods. Specifically, you have been provided calculations on the Average Price Per Square Foot, Average Age and Average, and the Average Prices for houses in the two neighborhoods and the Standard Deviation of each variable. Apply the method of Confidence Intervals at (97%) to Estimate answer the question whether:
   1. Average Age of House in each neighborhood is significantly different from 60 years
   2. Average Price of Houses in each neighborhood is significantly different from $415,000
   3. List at least two reasons that you think that the Average Price of houses and the Average Age of Houses in one neighborhood will be different from the other neighborhood in the file (You may use personal knowledge of the neighborhoods).

      Comparative Descriptive Statistics – Arocher vs Borough Park Average Price per Square Foot, Average Age of House & Average Price of House
      Neighborhood and Sample Size (n)	Average	Standard Error	Standard Deviation
      Average Age of House
      Staten Island, Arocher (40)	39.4250	4.48128	28.34213
      Brooklyn, Borough Park (49)	91.6939	2.04233	14.29628
      Average Price of House
      Staten Island, Arocher (40)	$396,374.30	$14,930.990	$94,431.873
      Brooklyn, Borough Park (49)	$696,638.78	$24,093.715	$168,656.005

Database Management System

Complete the following exercises in Connolly & Begg:

4.8 The following tables from part of a database held in a relational DBMS

Hotel (hotelNo, hotelName, city)

Room (roomNo, hotelNo, type, price)

Booking (hotelNo, guestNo, dateFrom, dateTo, roomNo)

Guest (guestNo, guestName, guestAddress)

a) Identify the foreign keys in this schema.

b) Explain how the entity integrity rule and the referential integrity rule apply to these relations.

5.8 Describe the relations that would be produced by the following relational algebra operations. In your description, make clear what attribute your relations have, and explain what each relation represents in the real world.

a) π_hotelNo(σ_{price > 50}(Room))

b) σ_{Hotel.hotelno = Room.hotelNo}(Hotel × Room)

c) π_hotelName(Hotel ⨝ _{Hotel.hotelNo = Room.hotelNo}(σ_{price > 50}(Room)))

The following tables form part of a Library database held in an RDBMS:

Book (ISBN, title, edition, year)

BookCopy (copyNo, ISBN, available)

Borrower (borrowerNo, borrowerName, borrowerAddress)

BookLoan (copyNo, dateOut, dateDue, borrowerNo)

Formulate the following queries in relational algebra:

5.24 List all book titles

5.25 List all book titles published in the year 2012.

5.27 List all copies of book titles that are available for borrowing.

5.30 List the names of borrowers with overdue book.s

1. Parkruns are free 5km timed runs usually run on weekends in different cities, towns and suburbs around the world. It is suspected that they are competitive and hence faster than 5km family fun runs which require payment for registration. Parkrun finishers do not get medals whereas all family fun run finishers get medals. The summary statistics below are from two random samples of 10 park runners and 10 5km family fun runners in Bellville. The races were run on the same route and on 2 separate days but with identical weather conditions. The summary statistics are for the recorded finishing times (in minutes) of the runners. park runners family fun runners Sample Mean: 20.58 25.67 Sample standard deviation : 3.5 5.7 (a) Is there evidence that the mean finishing time differs between the park runners and family fun runners? Perform an appropriate statistical test. (b) Construct a 95% confidence interval for the difference between the population means of the two groups. Compare your results to your conclusions in (a). (c) What assumption(s) are necessary for performing the hypothesis tests and constructing the confidence interval above? Hint: Use a 5% significance level for the F-test but report a p-value for the t-test

How Support for the Organisation’s Vision and Strategic Direction can be Built