16 Let ? have a normal distribution with ?(?) = 0.2 and ??(?) = 0.08. a. Find ?(? < 0.36) e. Find ? such that ?(? ≤ ?) = 0.05. b. Find ?(? > 0.16) f. Find ? such that ?(? ≥ ?) = 0.10. c. Find ?(? ≥ 0.60) g. Find ? such that ?(? > ?) = 0.80. d. Find 0.28 < ? ≤ 0.40) h. Find ? such that ?(? < ?) = 0.95.
In: Math
Universe Studios Sentiasa is a theme park licensed from a major
Bollywood studio. Customers pay a fixed fee to enter the park where
they can participate in a variety of activities such as riding
roller-coasters, playing on slides and purchasing themed souvenirs
from gift shops.
Customers purchase tickets to enter the theme park from ticket
offices located outside the park. Tickets are only valid on the day
of purchase. Adults and children are chargedthe same price for
admission to the park. Tickets are preprinted and stored in each
ticket office. Tickets are purchased using either cash or credit
cards. Each ticket has a number comprising of two elements - two
digits relating to the ticket office followed by six digits to
identify the ticket. The last six digits are in ascending
sequential order.All cash ticket sales are recorded on a computer
showing the amount of each sale and the number of tickets issued.
This information is transferred electronically to the accounts
office. Cash is collected regularly from each ticket office by two
security guards. The cash is then counted by two accounts clerks
and banked on a daily basis. The total cash from each ticket office
is agreed to the sales information that has been transferred from
each office. Total cash received is then recorded in the cash book,
and then the general ledger.
The park also accepts Visa and Mastercard. Payments by credit cards
are authorised online as the customers purchase their tickets.
Computers in each ticket office record the sales information, which
is transferred electronically to the accounts office. Credit card
sales are recorded for each credit card company in a receivables
ledger. When payment is received from the credit card companies,
the accounts clerks agree the total sales values to the amounts
received from the credit card companies, less the commission
payable to those companies. The receivables ledger is updated with
the payments received. You are now commencing the planning of the
annual audit of Universe Studios Sentiasa .
Required
(a) Identify four (4) risks that could affect the assertion of
completeness of sales and cash receipts. [12 marks] (b) Discuss the
extent to which substantive procedures could be used to confirm the
assertion of completeness of income in Universe Studios Sentiasa.
[6 marks] (c) Provide any four (4) substantive analytical
procedures that can be used to give assurance on the total income
from ticket sales for one day in Universe Studios Sentiasa. [12
marks]
In: Accounting
An Illinois state program evaluator is tasked with studying the intelligence of soon-to-graduate high school students in a number of Chicago-area high schools.
One of the specific questions that needs to be answered is, “How do the students of Collins High School, one of Chicago’s lowest-rated high schools in terms of academic achievement, fare in intelligence compared to students of Lincoln Park High School, one of Chicago’s highest-rated high schools in terms of academic achievement?”.
To conduct this study, the program evaluator administers the Wechsler Adult Intelligence Scale, 4th Edition (WAIS-IV) to one 12th grade class from each high school in the Chicago area (if you are interested in learning more about the WAIS-IV, click here).
The following table shows the WAIS-IV scores for student from Collins HS and Lincoln Park HS (note: data were fabricated for purposes of this excersize):
|
Collins HS |
Lincoln Park HS |
||
|
Student |
WAIS-IV Score |
Student |
WAIS-IV Score |
|
1 |
105 |
1 |
93 |
|
2 |
81 |
2 |
90 |
|
3 |
102 |
3 |
87 |
|
4 |
90 |
4 |
109 |
|
5 |
95 |
5 |
106 |
|
6 |
110 |
6 |
104 |
|
7 |
90 |
7 |
109 |
|
8 |
100 |
8 |
104 |
|
9 |
80 |
9 |
115 |
|
10 |
90 |
10 |
112 |
|
11 |
84 |
11 |
112 |
|
12 |
81 |
12 |
100 |
|
13 |
90 |
13 |
97 |
|
14 |
107 |
14 |
90 |
|
15 |
101 |
15 |
104 |
|
16 |
90 |
16 |
107 |
|
17 |
101 |
||
First, complete the below grouped frequency table of WAIS-IV scores for each HS:
|
WAIS-IV Score |
Collins HS ( f ) |
Lincoln Park HS ( f ) |
|
80-89 |
||
|
90-99 |
||
|
100-109 |
||
|
110-119 |
Compute the appropriate calculations to complete the following table :
|
MEASURE |
Collins HS ( f ) |
Lincoln Park HS ( f ) |
|
Mean |
||
|
Median |
||
|
Mode |
||
|
N |
||
|
N-1 |
||
|
ΣX |
||
|
(ΣX)2 |
||
|
ΣX2 |
||
|
S2X |
||
|
SX |
||
|
s2X |
||
|
sX |
What is the shape of the distribution of intelligence scores (normal, negatively skewed, positively skewed) for Collins HS? Explain how you arrived at your answer.
What is the shape of the distribution of intelligence scores (normal, negatively skewed, positively skewed) for Lincoln Park HS? Explain how you arrived at your answer.
In: Math
Organizational culture - Ritz-Carlton
The Ritz-Carlton is committed to treating its guests as HRHers of the hotel, drawing on the best institutional cultures in the area of residence, and the staff are referred to as "ladies and gentlemen". The hotel employees carry a card with the hotel logo printed on it that states: “We, ladies and gentlemen, provide the service to women and gentlemen.”
They have trained the employees of the Ritz in very precise
standards and specifications to deal with customers. The founders
of the company, Caesar Ritz and Auguste Escover, set these
standards for more than a century, and Ritz employees are
continuing to be trained in the company's traditions and
values.
The managers reinforce the company’s values and review service
methods in 15-minute “show” sessions every day in every hotel
building. These values form the basis for employee training and
compensation. Nothing is left to chance when it comes to providing
exemplary customer service,
Prospective employees pass tests related to cultural suitability
and attributes associated with the innate love of service
provision. "The smile should look natural," says one of the
company’s managers. Although team members are expected to be highly
motivated and highly motivated, their behavior in dealing with
inmates is very detailed and written, which is the company's new
approach in contrast to what the company has been doing before: No
less for employees how to make inmates feel happy. Employees are
expected to discover this themselves now. Diana Orrick, Vice
President, says, “We have switched from this written guideline
approach and moved to results management.” But the result has not
changed. The goal is still for the inmate to express his admiration
for the service they receive. However, based on the new approach,
the interactions of team members with inmates are more natural,
calm, and honest, which is better than appearing as lines from a
booklet.
answer the questions:
1. What is the prevailing culture at the Ritz-Carlton? In your
opinion, why is this type of culture important to a luxury hotel?
With a discussion of the weaknesses of such a culture type?
2. What challenges do you think the Ritz-Carlton Hotel faced in
changing the organizational culture? With a discussion of what the
Ritz-Carlton should do to maintain the new organizational
culture?
3. What characteristics of a potential employee do you think will
be the happiest and most successful in this culture? In your
opinion, how can new employees "learn" this culture?
4. What can other organizations learn from the Ritz-Carlton about
the importance of organizational culture?
In: Operations Management
Many product markets exhibit characteristics of both monopolistic competition and oligopolies, such as video game consoles and movie theater chains. What characteristics in each of these markets make it more monopolistically competitive? Which characteristics make it more like an oligopoly?
a. Elastic demand with differentiated products.
b. Differentiated products with mutual interdependence.
c. Single seller of a good or service and collusive agreement.
d. Large number of sellers with homogenous products.
In: Economics
The following probability distributions of returns for two
stocks have been estimated:
Probability Stock A Stock B
0.3 12% 8%
0.4 8 4
0.3 6 3
What is the coefficient of variation for the stock that is less
risky (assuming you use the coefficient of variation to rank
riskiness).
|
0.66 |
||
|
3.62 |
||
|
5.16 |
||
|
0.28 |
||
|
0.19 |
In: Finance
The following probability distributions of returns for two stocks have been estimated:
Probability; Stock A; Stock B
0.3; 12%; 5%
0.4; 8; 4
0.3; 6; 3
What is the coefficient of variation for the stock that is less risky (assuming you use the coefficient of variation to rank riskiness).
3.62
0.28
0.66
5.16
0.19
In: Finance
Laura is considering investing in a company's stock and is aware
that the return on that investment is particularly sensitive to how
the economy is performing. Her analysis suggests that four states
of the economy can affect the return on the investment.
| Probability | Return | ||||
| Boom | 0.3 | 25.00% | |||
| Good | 0.1 | 15.00% | |||
| Level | 0.3 | 10.00% | |||
| Slump | 0.3 | -5.00% | |||
Use the table of returns and probabilities above to determine
the expected return on Laura’s investment? (Round
answer to 3 decimal places, e.g. 0.076.)
| Expected return = |
| Use the table of returns and probabilities above to determine the standard deviation of the return on Laura's investment? (Round answer to 5 decimal places, e.g. 0.07680.) | ||
| Standard deviation= |
In: Finance
Using Arduino to blink an LED in morse code.
Morse code is used as one of the methods for communications. It consists of a series of “dit” and “dah” symbols. (i) Develop an Arduino program to produce a Morse code to express the phrase “We are students” using Pin #13 (connect an LED that is in series with a 220-Ω resistor to Pins #13 to view the information sent via the Morse code). Express one “dit” with LED on for 0.3 seconds and then off for 0.3 seconds; express one “dah” with LED on for 0.9 seconds and then off for 0.3 seconds; express the space between letters with LED off for 0.9 seconds; and express the space between words with LED off for 2.1 seconds.
In: Computer Science
An oil company purchased an option on land in Alaska. Preliminary geologic studies assigned the following prior probabilities.
| P(high-quality oil) | = | 0.3 |
| P(medium-quality oil) | = | 0.4 |
| P(no oil) | = | 0.3 |
If required, round your answers to two decimal places.
| (a) | What is the probability of finding oil? | ||||||||||||||||||||||||||||||||||||
| (b) | After 200 feet of drilling on the first well, a soil test is taken. The probabilities of finding the particular type of soil identified by the test are as follows. | ||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||
| Given the soil found in the test, use Bayes' theorem to compute the following revised probabilities (to 4 decimals). | |||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||
| What is the new probability of finding oil?(to four decumals) | |||||||||||||||||||||||||||||||||||||
In: Math