1. In the 1970s Dr. J Robin Warren used a technique not widely used by pathologists at the time, which allowed him to make novel observations that ultimately resulted in a new treatment for ulcers. What was this technique?

Select one:

a. The use of a fistula to see inside the stomach

b. The use of a high-power microscope

c. The use of a stain for visualizing bacteria

2. Darwin's observations in the Pampas grasslands of Argentina led him to the conclusion that

Select one:

a. species change through time.

b. species change with geographical distance.

c. the Earth must be much older than was widely believed at the time.

d. climate alone cannot account for the distribution of species.

e. similar species tend to be geographically clustered.

3. Which of the following historical figures argued that species were not fixed, i.e. able to change over time into new species?

Select one:

a. Cuvier

b. Aristotle

c. Hutton

d. Lamarck

e. Linnaeus

Monarch butterflies belong to the genus Danaus, the order Lepidoptera, the class Insecta and the family Nymphalidae. All members of the family Nymphalidae have brush-like hairs on their lower legs. The same brush-like hairs will be found on the lower legs of any other member of

Select one:

a. the genus Danaus

b. the class Insecta

c. All of these

d. the order Lepidoptera

The scientific name of the dove tree is Davidia involucrata Baillon. The word "Baillon" in this name is

Select one:

a. the subspecific epithet

b. the genus

c. the authority

d. the specific epithet

Question 1 (25pts):

Consider the string “data and program analytics”. Write a program to perform the following actions

• Find the index of the character ‘p’ in the given string
• Print the character which is present at index number seven
• Find the length of the String
• Split the string at every occurrence of a whitespace
• Replace the word “data” in the original string with “information” using a standard string manipulation function. Your output after the manipulation should be “information and program analytics”

Question 2 (15 pts):

List1 = [3, 4, 5, 20, 5]

• Find the index of the second 5
• Find the last element of this list

Question 3 (15 pts):

Set1 = {1, 2, 3, 4}, Set2={4, 5, 6}

• Print all elements that appear in both sets
• Print those elements that appear in either set
• Print all elements that appear in Set1 but not Set2

Question 4 (15 pts):

L = [('',), (), ('apple', 1), (), ("Paul", "Merage', 2020, "MSBA212"), ("d")]

Write a Python program to remove an empty tuple(s) from a list of tuples.

Expected outcome is:

[('',), ('apple', 1), ('Paul', 'Merage', 2020, 'MSBA212'), 'd']

Question 5 (15 pts):

• Reverse words in the string "one apple a day keeps the doctors away" and print the new string
• Sort the words in the string "one apple a day keeps the doctors away" alphabetically and then print the new string.

Question 6 (15 pts):

Two given lists [1,2,4,8,5,10] and [2,4,5,8,12,15], write a program to make a list whose elements are intersection of the above given lists.

To be done in Python 3.7

Some Web sites impose certain rules for passwords. Write a function that checks whether a string is a valid password. Suppose the password rules are as follows:

• A password must have at least eight characters.

• A password must consist of only letters and digits.

• A password must contain at least two digits.

Write a program that prompts the user to enter a password and displays valid password if the rules are followed or invalid password otherwise.

• A password cannot contain the word ‘password’
• A password cannot end with ‘123’

Your program should define a class called Password, which is in its own file called password.py. You should have another file called assn13-task2.py that has code the creates and uses a Password object. All input and print functions should be in in this file. Your program will prompt the user for a password, and after completing will ask the user if they want to enter another. The program should only ever create one instance of Password. Your Password class should have at least the following:

• setPassword() method
• isValid() method
  • This should return a Boolean
• getErrorMessage() method
  • This should return a string that indicates all problems with the password
  • It should be called if isValid() returns False
  • The isValid() method can generate this string as it tests each password requirement
    • Hint: create a private instance variable called __message to save it
  • Example return string
    • “must have 8 characters\nmust have at least 2 digits\ncannot end in 123”

In 1989, Mr Chan Wing On and Mr. Yuen Chi Ming among others founded their first restaurant under the “Tai Hing” brand in Sai Wan Ho, Hong Kong. Through years of development and integrating traditional and innovative business philosophies, Tai Hing Group Holdings (太興集團控股有限公司) gradually expanded from a humble siu mei style restaurant to one of the largest multi-brand casual dining restaurant operators in Hong Kong and established a chain of over 200 restaurants across Hong Kong, Mainland China, Macau and Taiwan. By adopting a multi-brand business model when expanding the market, in addition to the flagship “Tai Hing” brand restaurant, the group has grown their brand portfolio through a mixture of in-house development, acquisitions and licensing including the Taiwanese themed “TeaWood”, “Trusty Congee King”, “Men Wah Bing Teng”, “Phở Lê”, “Tokyo Tsukiji”, “Fish & Farmer”, “ Rice Rule” , “Hot Pot Couple” , “King Fong Bing Teng”and "Asam Chicken Rice". With its core values of “People Oriented”, “Value Every Customer”, “Focus on Quality”, and “Create New Chances” and its implementation of a stringent “5-S” management system aimed to Structuralize, Systemize, Sanitize, Standardize, and Self-discipline, Tai Hing has been the recipient of numerous awards as recognized by professional judges and the general public for its quality products, friendly services, and comfortable dining environment.

        To facilitate and streamline food production across its restaurants in Hong Kong, Tai Hing Group owns its own independent production and logistic center that sets a highly standardized production process and allows employees to provide close control over product development and production process to achieve the highest quality in its food products. In 2008, Tai Hing Group established a large food factory in Fo Tan in 2008 that boasts an area of approximately 158,414 square feet and currently supports all of their restaurants in Hong Kong.

        In 2016, to improve the standardization and effectiveness of the operations in Mainland China, the Group commenced construction of the Mainland China Food Factory, which commenced operation in October 2018 and houses an approximate gross floor area of 253,430 square feet. It mainly produces cured meat, frozen products and canned milk tea. It is estimated that the Mainland China Food Factory is able to support approximately 200 restaurants in Mainland China and the production of certain products for its restaurants in Hong Kong.

        The Group’s Food Factories enables the centralization of the food ingredients and supplies purchasing, food processing, quality control of raw materials, semi-processed or processed food ingredients, as well as packaging, warehousing and distribution functions. Additionally, as food safety and quality are the Group’s highest priorities, the Group applies the food safety and quality management principles embodied in various quality standards issued by the ISO in the Food Factories quality control system, and has quality assurance personnel implementing quality control policies and procedures. For example, the siu mei production unit of Tai Hing Group’s Hong Kong Food Factory has obtained ISO 22000 accreditation for food safety and quality management system in 2013. The Group’s quality control team oversees quality control at each stage of food processing in accordance with the formulated food processing procedures and HACCP (Hazard Analysis Critical Control Point) standard to ensure food safety.

        In local Hong Kong, although customers typically have a high demand for good quality casual dining experiences, Tai Hing’s Hong Kong business has been challenging since late May of 2019 due to political unrest and the subsequent emergence of Covid-19. Weak market sentiment impacted the quick service restaurant business and casual dining brands, particularly the dinner segment and weekend sales, as well as outlets located in shopping and commercial areas. In the year ended December 31 of 2019, although Tai Hing’s revenue increased by approximately 4.0% to HK$ 3,252.3 million (2018: HK$ 3,126.1 million), due to increased staff costs, depreciation and amortization, and other increased costs and expenses, the net profit for the year ended 31 December 2019 was only HK$76.9 million (2018: HK$304.9 million).

        According to figures published by the Census and Statistics Department, the value of total restaurant receipts in July to September decreased HK$3500 million compared to the same quarter in 2018. Although the fast food restaurant sector still recorded incremental growth, the economic hardships inflicted by the coronavirus pandemic predict tough times ahead for the casual dining industry. Given customers’ increasing sensitivity to price, the Tai Hing Group will be very cautious on price adjustment.

        The Tai Hing Group expects market sentiment may take some time to improve, especially in a highly competitive restaurant industry in Hong Kong. Whilst taking a prudent approach in managing cash flow, controlling costs and improving productivity, they will continue to focus on customer service and dining experience, as well as product quality, which will drive same store sales growth. Hong Kong is the Group’s key market, and Tai Hing Group is committed to striving to incorporate innovative methods to support its industry’s development by actively exploring opportunities to adopt automated food processing machines in restaurants, creating a safer and healthier working environment, and increasing operational efficiency to ensure consistency in dish portion and quality.

Question: Given the background and position of Tai Hing Group, use your knowledge of different types of strategies to make 3 strategic recommendations for Tai Hing Group Holdings to achieve strategic competitiveness. Support your recommendations with well-developed arguments and appropriate examples.

­­­­Lecture Homework Assignment (LHA) #4

Bio 2010 Microbiology

Print Name: _________________________                                       Section # ________

Virulence Factors:

There are two classes of bacterial exotoxins that are based on their target. Identify the two classes of exotoxin and the target for each. (1/2 pt. ea.; 2 pts. Total)

Type of Exotoxin                                              Target

Other than exotoxins, name two virulence factors associated with bacterial pathogens. (½ pt. ea.; 1 pts. Total)

Foodborne Disease:

Differentiate between the following types of foodborne disease in terms of (1/2 pt. ea.; 3 pts. Total):

i) what is ingested; ii) relative length of incubation period; iii) relative duration of period of illness. (NOTE: For answers ii) and iii), do NOT give specific number of hours, days, etc., but rather the relative length of time compared to each other.

Intoxication:

i)

ii)

iii)

Foodborne infection:

i)

ii)

iii)

Name two pathogens (Genus & species) for each of the two types of foodborne disease. (½ pt. ea.; 2 pts. Total)

Intoxication:

1.)

2.)

Foodborne infection:

1.)

2.)

Antibiotic Resistance:

What are the two things that mankind is doing that result in increasing levels of antibiotic resistance? (Answers should be one word each.) (1/2 pt. ea.; 1 pt. Total)

1.)

2.)

Penicillin, cephalosporin, monobactams, and carbapenums all belong to the same class of antibiotics, based on a common molecular structure in each. 1.) What is the name of this chemical structure?   2.) On the basis of this molecular structure, what is the name given to the class of enzymes that cleaves it? (Hint: The term is generic to all of these enzymes. Do not provide names that only apply to a single antibiotic.)   3.) Draw a picture of this structure and only this structure, and label each atom. (1/2 pt. ea.; 1 ½ pt. Total)

1.)

2.)

                3.)

Penicillin inhibits what metabolic process in susceptible bacterial cells? Be specific. (Hint: This is an example of one of the five ‘mechanisms of resistance,’ of certain bacteria against certain antibiotics. It also is the basis of the Ames Test, to determine potential chemical carcinogens.) (1 pt. Total)

Viruses:

Identify, in the correct order, the steps during the replication of an enveloped animal virus. (½ pt. ea.; 3 pts. Total)

Transfer of genes from one bacterium to another may be accomplished by incorrect assembly of bacteriophage that contain gene(s) from the original host bacterium. This process is known as what? One word answer. (1 pt. Total)

What are the three ‘Golden Rules’ of genetics that also apply to viruses? (1/2 pt. ea.; 1 ½ pt. Total)

1.)

2.)

                3.)

Immunity: Match the Immunological Process with the best description of the Type of Immunity elicited. Each Immunological Process can be used only one time, but the Type of Immunity may be associated with more than one Immunological Process. (1/2 pt. ea.; 3 pts. Total)

(microbiology home work assaignment)

­­­­Lecture Homework Assignment (LHA) #4

Bio 2010 Microbiology

Print Name: _________________________                                       Section # ________

Virulence Factors:

There are two classes of bacterial exotoxins that are based on their target. Identify the two classes of exotoxin and the target for each. (1/2 pt. ea.; 2 pts. Total)

Type of Exotoxin                                              Target

Other than exotoxins, name two virulence factors associated with bacterial pathogens. (½ pt. ea.; 1 pts. Total)

Foodborne Disease:

Differentiate between the following types of foodborne disease in terms of (1/2 pt. ea.; 3 pts. Total):

i) what is ingested; ii) relative length of incubation period; iii) relative duration of period of illness. (NOTE: For answers ii) and iii), do NOT give specific number of hours, days, etc., but rather the relative length of time compared to each other.

Intoxication:

i)

ii)

iii)

Foodborne infection:

i)

ii)

iii)

Name two pathogens (Genus & species) for each of the two types of foodborne disease. (½ pt. ea.; 2 pts. Total)

Intoxication:

1.)

2.)

Foodborne infection:

1.)

2.)

Antibiotic Resistance:

What are the two things that mankind is doing that result in increasing levels of antibiotic resistance? (Answers should be one word each.) (1/2 pt. ea.; 1 pt. Total)

1.)

2.)

Penicillin, cephalosporin, monobactams, and carbapenums all belong to the same class of antibiotics, based on a common molecular structure in each. 1.) What is the name of this chemical structure?   2.) On the basis of this molecular structure, what is the name given to the class of enzymes that cleaves it? (Hint: The term is generic to all of these enzymes. Do not provide names that only apply to a single antibiotic.)   3.) Draw a picture of this structure and only this structure, and label each atom. (1/2 pt. ea.; 1 ½ pt. Total)

1.)

2.)

                3.)

Penicillin inhibits what metabolic process in susceptible bacterial cells? Be specific. (Hint: This is an example of one of the five ‘mechanisms of resistance,’ of certain bacteria against certain antibiotics. It also is the basis of the Ames Test, to determine potential chemical carcinogens.) (1 pt. Total)

Viruses:

Identify, in the correct order, the steps during the replication of an enveloped animal virus. (½ pt. ea.; 3 pts. Total)

Transfer of genes from one bacterium to another may be accomplished by incorrect assembly of bacteriophage that contain gene(s) from the original host bacterium. This process is known as what? One word answer. (1 pt. Total)

What are the three ‘Golden Rules’ of genetics that also apply to viruses? (1/2 pt. ea.; 1 ½ pt. Total)

1.)

2.)

                3.)

Immunity: Match the Immunological Process with the best description of the Type of Immunity elicited. Each Immunological Process can be used only one time, but the Type of Immunity may be associated with more than one Immunological Process. (1/2 pt. ea.; 3 pts. Total)

microbiology assignment

­­­­Lecture Homework Assignment (LHA) #4

Bio 2010 Microbiology

Print Name: _________________________                                       Section # ________

Virulence Factors:

There are two classes of bacterial exotoxins that are based on their target. Identify the two classes of exotoxin and the target for each. (1/2 pt. ea.; 2 pts. Total)

Type of Exotoxin                                              Target

Other than exotoxins, name two virulence factors associated with bacterial pathogens. (½ pt. ea.; 1 pts. Total)

Foodborne Disease:

Differentiate between the following types of foodborne disease in terms of (1/2 pt. ea.; 3 pts. Total):

i) what is ingested; ii) relative length of incubation period; iii) relative duration of period of illness. (NOTE: For answers ii) and iii), do NOT give specific number of hours, days, etc., but rather the relative length of time compared to each other.

Intoxication:

i)

ii)

iii)

Foodborne infection:

i)

ii)

iii)

Name two pathogens (Genus & species) for each of the two types of foodborne disease. (½ pt. ea.; 2 pts. Total)

Intoxication:

1.)

2.)

Foodborne infection:

1.)

2.)

Antibiotic Resistance:

What are the two things that mankind is doing that result in increasing levels of antibiotic resistance? (Answers should be one word each.) (1/2 pt. ea.; 1 pt. Total)

1.)

2.)

Penicillin, cephalosporin, monobactams, and carbapenums all belong to the same class of antibiotics, based on a common molecular structure in each. 1.) What is the name of this chemical structure?   2.) On the basis of this molecular structure, what is the name given to the class of enzymes that cleaves it? (Hint: The term is generic to all of these enzymes. Do not provide names that only apply to a single antibiotic.)   3.) Draw a picture of this structure and only this structure, and label each atom. (1/2 pt. ea.; 1 ½ pt. Total)

1.)

2.)

                3.)

Penicillin inhibits what metabolic process in susceptible bacterial cells? Be specific. (Hint: This is an example of one of the five ‘mechanisms of resistance,’ of certain bacteria against certain antibiotics. It also is the basis of the Ames Test, to determine potential chemical carcinogens.) (1 pt. Total)

Viruses:

Identify, in the correct order, the steps during the replication of an enveloped animal virus. (½ pt. ea.; 3 pts. Total)

Transfer of genes from one bacterium to another may be accomplished by incorrect assembly of bacteriophage that contain gene(s) from the original host bacterium. This process is known as what? One word answer. (1 pt. Total)

What are the three ‘Golden Rules’ of genetics that also apply to viruses? (1/2 pt. ea.; 1 ½ pt. Total)

1.)

2.)

                3.)

Immunity: Match the Immunological Process with the best description of the Type of Immunity elicited. Each Immunological Process can be used only one time, but the Type of Immunity may be associated with more than one Immunological Process. (1/2 pt. ea.; 3 pts. Total)

This assignment concerns the idea of "private equity," a notion that is very important to the financial strategy of firms. We had a brief discussion on Blackrock, which is a private equity firm. Many companies have recently been bought by private equity, including Dell. Private equity firms argue that they can re-engineer the firm without shareholders breathing down their neck.

But private equity can be a very dangerous thing. Private operators buy companies by borrowing money, then load the debt on the companies books, strip it of all value, and leave it to go bankrupt. A particularly egregious case involved the Simmons mattress company, and the same might be unfolding at Toys R Us.

In his 2014 letter to investors, Warren Buffet had warned about the ethics of this phenomenon:

Families that own successful businesses have multiple options when they contemplate sale. Frequently, the best decision is to do nothing. There are worse things in life than having a prosperous business that one understands well. But sitting tight is seldom recommended by Wall Street. (Don’t ask the barber whether you need a haircut.)

When one part of a family wishes to sell while others wish to continue, a public offering often makes sense. But, when owners wish to cash out entirely, they usually consider one of two paths.

The first is sale to a competitor who is salivating at the possibility of wringing “synergies” from the combining of the two companies. This buyer invariably contemplates getting rid of large numbers of the seller’s associates, the very people who have helped the owner build his business. A caring owner, however – and there are plenty of them – usually does not want to leave his long-time associates sadly singing the old country song: “She got the goldmine, I got the shaft.”

The second choice for sellers is the Wall Street buyer. For some years, these purchasers accurately called themselves “leveraged buyout firms.” When that term got a bad name in the early 1990s – remember RJR and Barbarians at the Gate? – these buyers hastily relabeled themselves “private-equity.”

The name may have changed but that was all: Equity is dramatically reduced and debt is piled on in virtually all private-equity purchases. Indeed, the amount that a private-equity purchaser offers to the seller is in part determined by the buyer assessing the maximum amount of debt that can be placed on the acquired company.

Later, if things go well and equity begins to build, leveraged buy-out shops will often seek to re-leverage with new borrowings. They then typically use part of the proceeds to pay a huge dividend that drives equity sharply downward, sometimes even to a negative figure.

In truth, “equity” is a dirty word for many private-equity buyers; what they love is debt. And, because debt is currently so inexpensive, these buyers can frequently pay top dollar. Later, the business will be resold, often to another leveraged buyer. In effect, the business becomes a piece of merchandise.

So workers and customers suffer, while financiers make money.

***In this assignment, please write a 500-word analysis of private equity. Give your essay an original title. You can be pro-private equity or anti. I want you demonstrate how well you understand this concept. would you please elaborate and elucidate it thanks.

2.  The profit function from manufacturing and selling xx BabCo Lounge Chairs is:
P(x)=30x−140−0.2x^2

a. Find the exact additional profit for manufacturing and selling 10 chairs instead of 9 chairs.

b. Find the marginal profit at x=9  

= per lounge chair.

3.  Acme Office Supplies manufactures file cabinets. The cost (in dollars) of producing x file cabinets is given by:

C(x)=1025+60x−x^2
a. Find the exact additional cost of producing 7 file cabinets instead of 6.

b. Find the marginal cost function. C'(x)=

c. Use the marginal cost function approximate the additional cost of producing 7 file cabinets instead of 6.

4. The cost function for the production of microwaves is given as

C(x)=50,000+40xC(x)=50,000+4

where x is the number of microwaves produced and C(x) is the total cost (in dollars) of producing x units.

Find the marginal cost as a function of x. C'(x)=

5. The total profit (in dollars) from the production and sales of xx espresso machines is

P(x)=40x−0.02x^2−260

a. How many espresso machines must be produced and sold to have a marginal profit of 32 dollars per unit:
machines

b. Find the marginal profit at a production/sales level of 350 machines:
dollars per espresso machine

c. Use the profit at 350 machines, which is $11290, and the marginal profit at 350 machines that you computed above to estimate the profit at an output/sales level of 351.

=$

6. The price-demand function for the sale of yo-yos is:

p=6−0.02x

where p is the price of a yo-yo in dollars, and x is the demand for yo-yos at a price of p dollars.
a. R'(290)=

b. What are the correct units for R'(290)?

7. The price-demand and cost functions for the production of microwaves are given as

p=250−x80

and C(x)=16000+30x

where x is the number of microwaves that can be sold at a price of p dollars per unit and C(x) is the total cost (in dollars) of producing x units

a. Find the profit function in terms of x.
P(x)=

b. Evaluate the marginal profit function at x=1500 microwaves rounded to the nearest cent.
P'(1500)=    per microwave

8.  AnselPix is an online company that makes and sells photographs of National Parks. The profit from selling xx prints of a scene in Arches National Park is P(x) dollars. AnselPix believes that the profit from making and selling 150photos will be 22,000 dollars. Assume that the marginal profit is P'(150)=−150. As AnselPix's financial advisor, would you recommend that they sell more photos or fewer photos? Why?

Fill in the first blank with either the word "more" or "fewer" and the second with the word "increase" or "decrease".

I would recommend that AnselPix sell (Select an answer, more/ fewer?) photos because the company will (Select an answer decrease/increase?) profit by approximately ($?) if they decide to make and sell the 151st photo instead of 150 photos.

9. The revenue (in dollars) from producing and selling xx navigation systems is

R(x)=x(2100−30x)

a. Find the marginal revenue function.
R'(x)=

You are currently working at NCLEX Memorial Hospital in the Infectious Diseases Unit. Over the past few days, you have noticed an increase in patients admitted with a particular infectious disease. You believe that the ages of these patients play a critical role in the method used to treat the patients. You decide to speak to your manager and together you work to use statistical analysis to look more closely at the ages of these patients. You do some research and put together a spreadsheet of the data that contains the following information:

Client number

Infection Disease Status

Age of the patient

You need the preliminary findings immediately so that you can start treating these patients. So let’s get to work!!!!

Background information on the Data:

The data set consists of 60 patients that have the infectious disease with ages ranging from 35 years of age to 76 years of age for NCLEX Memorial Hospital. Remember this assignment will be completed over the duration of the course.

5. What is the P-value? Explain how you determined it.

6. What is the critical value? Explain how you calulated it.

7. What is your decision? Reject the null or do not reject the null? Explain why you made your decision including the results for your p-value and the critical value.

8. State the final conclusion in non-technical terms.

Please show your work for the construction of the test-statistic and explain your process for finding the p-value and critical value. You may use the Equation Editor to format your calculation steps on the Word document or attach an Excel spreadsheet clearly showing each calculation for #B4 and #B5, but your answers still need to appear on the Word document. Also, be sure to number each response in your paper using the same numbers as above