A random sample of 36 observations is drawn from a population with a mean equal to 51 and a standard deviation equal to 15.

1. What is the mean and the standard deviation of the sampling distribution of x̄?

1. Calculate the z-score corresponding to a value of x̄ = 45.5.
   
   
2. Calculate the z-score corresponding to a value of x̄ = 46.5.
   
   
3. Find P(x̄ ≥ 45.5) (to 4 decimals)
   
   
4. Find P(x̄ < 46.5) (to 4 decimals)
   
   
5. Find P(45.5 ≤ x̄ ≤ 46.5) (to 4 decimals)
   
   
6. There is a 60% chance that the value of x̄ is above  (to 4 decimals).

PYTHON

Write a regular expression that will accept any properly formatted email address, and reject any invalid email address. An example of a valid inputted email address would be "[email protected]".

It is a strict requirement that this code is implemented in python. The code must be implemented from scratch not using e.g. numpy etc.

a. Create a function that takes a matrix X of all sizea as input and gives the transposed matrix as output. Example

transposeMatrix([[1,2]
          ,[3,4]
          ,[5,6]]) = [[1,3,5]
                      ,[2,4,6]]

b. Create a function that multilpies a matrix X1 and X2 of all sizes. Example

x1 = [[0,1]
     ,[1,0]
     ]
x2 = [[1, 0]
     ,[0,-1]
     ]
matrtixMultl(x1,x2) = [[0, -1]
                 ,[1,  0]
                 ]

c. Create a function that takes a square matrix as input and creates its inverse matrix as output. And that is such that matrixMult(A,matrixInvert(A)) is the unit matrix

Provide examples of each of the eight types of waste described in this chapter for the following service operations:

Types of wastes: Waste resulting from overproduction, setup time, processing time, waiting time, transportation, movement, inventory, poor quality

1. A supermarket

2. A campus cafeteria

3. A library

4. A dentists office

May i please get a positive feedback about the comment below.

Money is often seen as a barrier to why companies have not started using data analytics software. So, what are the barriers keeping companies from utilizing the software that has proven to pay for itself in relatively short periods of time? The software has allowed companies to gain insights and create decisions based on big data analytics.

Companies that want to gain insight in forecasting successfully must effectively use data analytics software, and not focus on cost. The software can take data and create usable information that will drive sales and understand the movement of inventory and the buying powers of consumers. Companies cannot restrict their growth because they are unable to dismantle information when the software is available to process the data. New technology cannot be a barrier, because of lack of training because often in-house IT employees are capable of understanding new software/data systems that are already part of their staff.

The barriers of people, technology, and processes can limit a company’s growth, and finding a way to bypass these obstacles should be a focus of company executives if they want to grow and expand their business. Leadership often become barriers when presented with new ideas and changes in the workforce. Technology can be a barrier when companies are hesitant in making changes, often relying on existing legacy systems that are outdated and not able to process data. Company leaders and executives must understand that the way data is often processed underutilized and can often be overlooked, especially if only partial information is being analyzed. Any of these barriers can create hesitation for company executives to invest in new data; if the adoption of the current data analytical systems was not producing an output that increased sales or the operation of a company, why would an executive want to invest in new software.  

Company executives must understand that technology is continuously changing and that creating a system that can communicate with both suppliers and vendors is essential in the growth and development of its operations. Understanding the importance of having a competitive advantage and using the Buy, Make, Move and Sell lever; should remove the hesitations of using analytical data and drive companies to invest in their future with the new smarter software.

M. P. VanOyen Manufacturing has gone out on bid for a regulator component. Expected demand is

700700

units per month. The item can be purchased from either Allen Manufacturing or Baker Manufacturing. Their price lists are shown in the table. Ordering cost is

​$5555​,

and annual holding cost per unit is

​$66.

​a) What is the economic order quantity if price is not a​ consideration?

nothing

units

b) which supplier should be used?

c) what is the optimal order quantity?

d) total cost?

two minute speach on canada current leaves: about disappearance or death of child

Assume your company's pension plan promises to pay you $57,000 per year starting when you retire in 33 years (the first 33 years from now) and increase the payment by 2% every year after the first to compensate for inflation. You hope to live 21 years after you retire (you collect 22 payments). If your interest rate is 6%, what is the value today of your pension plan?

This week we focus on some additional terms for IT users. This week lets discuss what a community of practice is.   Why are they important and how can they impact the culture within an organization?( 300 - 350 words)

Student Success Seminar (STSC-150) Class

1. Write about one of your self-defeating behavior patterns. Choose a behavior pattern that you checked on the list in Chapter 6 or identify a self-defeating behavior that isn't on the list but that you do often. (Download the attachment in this activity for a copy of the list.) Remember, a behavior is something someone else can see you do. Develop your journal paragraphs by anticipating questions that someone reading them might have about this behavior pattern. (Even you might have questions when you read your journal 10 years from now.) For example:

- What exactly is your self-defeating behavior pattern?
- What are some specific examples of when you did this behavior?
- What may have caused this habit?
- What undesirable effects has it had on your life?
- How would your life be improved if you changed it?

One student began by writing, "One of my self-defeating behavior patterns is that I seldom do my best work on college assignments. For example, in my biology lab . . ."

2. Repeat Step 1 for one of your self-defeating thought patterns or for one of your self-defeating emotional patterns. Once again, choose a pattern that you checked on the list, or identify a habit that isn't on the list but that you often think or feel. You might begin, "One of my self-defeating thought patterns is that I often wonder if I'm smart enough to be successful in college. I especially think this during exams. For example, last Thursday I . . . Or . . . One of my self-defeating emotional patterns is that I often feel frustrated. For example . . . ".

When you're finished, upload or share your journal entry. Then hit "Submit Now" to submit this assignment for grading.

You must evaluate the purchase of a proposed spectrometer for the R&D department. The base price is $70,000, and it would cost another $17,500 to modify the equipment for special use by the firm. The equipment falls into the MACRS 3-year class and would be sold after 3 years for $24,500. The applicable depreciation rates are 33%, 45%, 15%, and 7%. The equipment would require an $10,000 increase in net operating working capital (spare parts inventory). The project would have no effect on revenues, but it should save the firm $63,000 per year in before-tax labor costs. The firm's marginal federal-plus-state tax rate is 35%.

1. What is the initial investment outlay for the spectrometer, that is, what is the Year 0 project cash flow? Enter your answer as a positive value. Round your answer to the nearest cent.
   $  
2. 
   
3. What are the project's annual cash flows in Years 1, 2, and 3? Do not round intermediate calculations. Round your answers to the nearest cent.
   Year 1: $  
   Year 2: $  
   Year 3: $  
4. 
   
5. If the WACC is 12%, should the spectrometer be purchased?
   -Select-YesNo

In 400-500 words

What are the economic conditions of globalization that allow Uber to function across the world?

What are Uber's legal and regulatory challenges in the US? In other parts of the world?

What role has technology played in the emergence of Uber as a large, global corporation? How do you see this changing in the future?

IN C++

Create a class called TextInt. The purpose of a TextInt is to store an integer and convert it to the English text form of the integer when needed, such as ‘zero’ for 0, ‘one’ for 1, and so on, up to ‘nine thousand nine hundred ninety nine’ for 9999. You do NOT need punctuation (commas, hyphens, ‘and’, etc.) The TextInt class should have its own .h and .cpp files. At least the translate function should be implemented in the .cpp file. The rest can be inline functions. A TextInt should have a private member variable number of type int. The TextInt class should have static string members to help translate integers to text. For example, to represent the unique words for translating, you would use:

static string lessThan20[] = {“zero”, “one”, …, “eighteen”, “nineteen”};

static string tens[] = {“twenty”, “thirty”, … static string hundred = “Hundred”;

Any number can be translated using a combination of these, such as 1234 = 1000 + 200 + 30 + 4 = one thousand two hundred thirty four.

The class should have a default constructor with one parameter that initializes the value of the member variable number. Note that the parameter must have a default value to make it a default constructor. It should have public methods (member functions) to return the integer and text versions of number, and to change the value of number.

Overload the following operators so that TextInt can work just like a normal int in code: +, -, /, *, %, and <<.

Note that the first 5 will be almost identical.

For example, this code should work when you are done:

TextInt textInt1(2458), textInt2(1278);

TextInt textInt3 = textInt1 + textInt2;

cout << textInt3 << endl;

Should output: 3736: three thousand seven hundred thirty six