1. What is the process of removing data that you think is irrelevant (such as stop words) called?

   		Unsupervised learning
   		Cleaning data
   		Tabulating the census
   		Untheorized research

2.13 Program: Food receipt (Python 3)

1.Enter food item name: hot dog

Enter item price: 2

Enter item quantity: 5

RECEIPT

5 hot dog @ $ 2.0 = $ 10.0

Total cost: $ 10.0

2.Enter food item name: hot dog

Enter item price: 2

Enter item quantity: 5

RECEIPT

5 hot dog @ $ 2.0 = $ 10.0

Total cost: $ 10.0

Enter second food item name: ice cream

Enter item price: 2.50

Enter item quantity: 4

RECEIPT

5 hot dog @ $ 2.0 = $ 10.0

4 ice cream @ $ 2.5 = $ 10.0

Total cost: $ 20.0

3.Enter food item name: hot dog

Enter item price: 2

Enter item quantity: 5

RECEIPT

5 hot dog @ $ 2.0 = $ 10.0

Total cost: $ 10.0

Enter second food item name: ice cream

Enter item price: 2.50

Enter item quantity: 4

RECEIPT

5 hot dog @ $ 2.0 = $ 10.0

4 ice cream @ $ 2.5 = $ 10.0

Total cost: $ 20.0

15% gratuity: $ 3.0

Total with tip: $ 23.0

Suppose in July of 2008, the true proportion of U.S. adults that thought unemployment would increase was 47%. In November of 2008, the same question was asked to a simple random sample of 1000 U.S. adults and 432 of them thought unemployment would increase. Can we conclude that the true proportion of U.S. adults that thought unemployment would increase in November is less than the proportion in July? Use a 5% significance to test.
Round to the fourth
H0: Select an answer x̄ p̂ μ p  Select an answer = < > ≠  
HA: Select an answer x̄ p̂ μ p  Select an answer = < > ≠  
What's the minimum population size required?
How many successes were there?
Test Statistic:
P-value:
Did something significant happen? Select an answer Significance Happened Nothing Significant Happened
Select the Decision Rule: Select an answer Reject the Null Accept the Null Fail to Reject the Null
Select an answer: is or is not  enough evidence to conclude Select an answer that the true proportion of U.S. adults that thought unemployment would increase in November is less than 0.47 that the true proportion of U.S. adults that thought unemployment would increase in November is more than 0.47 that the true proportion of U.S. adults that thought unemployment would increase in November is 0.47

Build a 90% confidence interval and decide if you can conclude the same. Use your calculator to do this and round to the fourth decimal place.
( , )
Can we conclude the same as our Hypothesis Test?
Select an answer no yes  because the true proportion of U.S. adults in November 2008 that thought unemployment would increase

Many years ago, I was obliged to polish to a mirror finish the leather shoes and belt of a certain sergeant to a mirror finish. The only way of achieving the desired result was to use copious quantities of spit, a trick which was taught to me by various people who had spent time in the army. My question is ... why does spit enhance the shine of shoe polish? And perhaps a related question ... modern shoes don't seem to require polishing. What surface finish is applied in the manufacturing process which gives an everlasting shine?

Language is C++

NOTE:
No arrays should be used to solve problems and No non-constants global variables should be used.

PART A: (Minusculo Inn)

Minusculo Inn has only eight guest rooms:

Write a program that asks for the room number and displays the amenities. If the user enters a room number that does not exist, the program should display “Input error”.

You must use a switch statement in your program to solve this problem.
No Repetition Statements is needed in this problem. A User is only making one selection.

The Minusculo Inn Restaurant has 4 lunch combos for customers to choose:

   Combo A : Fried chicken with slaw [price: $4.25]
   Combo B : roast beef with mashed potato [price: $5.75]
   Combo C : Fish and chips [price: $5.25]
   Combo D : soup and salad [price: $3.75]

Write a program to calculate how much a party of customers should pay. Suppose the party orders 2 B’s, 1 A and 3 D’s. The casher will enter B, B, A, D, D, D and T into the program. The T means “calculating total of the order”. It is a signal telling the computer that the whole order has been entered and it is time to calculate the total amount the party should pay. Assume there is no sales tax. The following is an example:

   Enter item ordered [A/B/C/D] or T to calculate total: B
   Enter item ordered [A/B/C/D] or T to calculate total: B
   Enter item ordered [A/B/C/D] or T to calculate total: A
   Enter item ordered [A/B/C/D] or T to calculate total: D
   Enter item ordered [A/B/C/D] or T to calculate total: D
   Enter item ordered [A/B/C/D] or T to calculate total: D
   Enter item ordered [A/B/C/D] or T to calculate total: T
   Please pay this amount: $ 27

PART B: (Statistics program)

Write a program that reads the integers in the text file (user must enter name of file) and:

Displays the number of integers in the file (5 %)
Displays the number of even and odd integers (5%)
Displays the sum of the even integers and the sum of the odd integers as well as the sum of all the integers (5%)
Displays the largest integer and the smallest integer (5 %)
Computes the average of the largest and smallest integer (10 %)
Compute the sum of ALL the digits in the input file (i.e. 123 475 – Sum is 1+2+3+4+7+5 = 22) (15 %)

Assume the contents of the file are as follows:

123 475 61 77 910
234 138 134 95 674
345 31 211 952 873
22 7 876 347 450

The following is a sample output: User input is the 'integers.dat'

What is name of the input file? integers.dat
The number of integers in the file is 20
There are 11 odd integers and 9 even integers
The sum of the odd integers is 2645
The sum of the even integers is 4390
The sum of all the integers is 7035
The largest integer is 952
The smallest integer is 7
The average of 952 and 7 is 479.5
The sum of all the digits is 212

NOTE:

Use two decimal point precision for the average

To check your code, adjust one of the integers in the file, recompile your code and run again (suggest changing the largest and smallest integers )

Even though there are 20 integers in the file, the program should NOT presume there are 20 integers. In other words, you should not solve this problem by declaring 20 integer variables. If I choose to use another integers.dat file other than the one provided with the assignment, your program should still work correctly with that file as well. All you can assume is that a series of integers will be read in from the file. Therefore, you need to implement a solution that uses the repetition control structures (for, while, do…while) in the reading and processing of these values to produce your output

Choose a website that is very poorly designed or not fully compliant with HTML5 standards and analyze its flaws. Create a presentation in which you describe its main issues and detail them thoroughly. Include images and source code if needed. It can be any website that you think could be done better

As part of their job responsibilities, engineers often have to make decisions related to the financial well-being of their organization. This includes the process of downsizing: reducing their staff and subcontracting the work/jobs. Some of the reasons for downsizing include:

1. To reduce the cost of production/operations by shifting work to lower-cost wage regions (domestically or internationally).
2. To reduce the cost of production/operations by introducing advanced technologies (e.g. automation) that require fewer employees
3. To gain market share in other regions by setting up plans in new targeted markets. Some of these markets may require using local labor by creating "local" employment opportunities.
4. To lower production cost by taking advantage of incentives offered by another locale (i.e. another city, state, or country)

Discuss the ethical issues and responsibilities associated with downsizing and how they related to the engineering code of ethics.

Note: you can just answer 1 out of the 4 topics listed above

A electronics manufacturer has developed a new type of remote control button that is designed to operate longer before failing to work consistently. A random sample of 28 of the new buttons is selected and each is tested in continuous operation until it fails to work consistently. The resulting lifetimes are found to have a sample mean of ?¯x¯ = 1254.6 hours and a sample standard deviation of s = 109.1. Independent tests reveal that the mean lifetime of the best remote control button on the market is 1225 hours. Conduct a hypothesis test to determine if the new button's mean lifetime exceeds 1225 hours. Round all calculated answers to four decimal places.

2. Which of the following conditions must be met to perform this hypothesis test? Select all the correct answers.

A. The sample must be large enough so that at least 10 buttons fail and 10 succeed.
B. The observations must be independent.
C. We must be able to expect that at least 5 buttons will fail to work consistently.
D. The number of remote control buttons tested must be normally distributed.
E. The lifetime of remote control buttons must be normally distributed.

3. Calculate the test statistic  ? z t X^2 F  =

4. Calculate the p-value

5. Calculate the effect size, Cohen's d, for this test. ?̂ d^ =

6. The results of this test indicate we have a...
A. small
B. large
C. moderate to large
D. small to moderate
effect size, and...
A. extremely strong evidence
B. some evidence
C. strong evidence
D. very strong evidence
E. little evidence
that the null model is not compatible with our observed result.

NOTE*** answer is not 91309.2 or 109154.41 or 110898.7 or 119875.42 or 117742.56

Signals and systems

Consider the following discrete signal x[n] = sin(π n/32) (u[n]-u[n-33])

a) Using MATLAB only, Find the DFT using FFT algorithm,

b) Plot the signal x[n], spectrum |X(ω)|^2 , and phase of X(ω).

Hint: use L=512 for FFT.

(A) Young's double-slit experiment is performed with 560-nm light and a distance of 2.00 m between the slits and the screen. The tenth interference minimum is observed 7.30 mm from the central maximum. Determine the spacing of the slits (in mm).

(B) What If? What are the smallest and largest wavelengths of visible light that will also produce interference minima at this location? (Give your answers, in nm, to at least three significant figures. Assume the visible light spectrum ranges from 400 nm to 700 nm.)

smallest wavelength _______nm

largest wavelength________nm

Assume you are a vice-president in charge of a new business-to-business e-commerce division of a well-known major international auto parts manufacturer.

A) A cyber squatter has registered the company name as a domain Web name. What are your options to secure the domain name for your company?

B) Discuss the steps you should take to ensure worldwide protection of your domain name.

Instructions

Phillips Brothers Printers (PBP) provides printing services to a wide variety of customers. For most jobs, PBP submits a bid and uses the job cost system to accumulate costs, but bills the bid amount to the customers. They do have several customers who routinely have "out of the ordinary" jobs and PBP bills those on a cost-plus basis, with the customer paying the actual costs plus a predetermined profit percentage on the total cost.

Sally Phillips, controller for PBP, is approached by the company President who asks her to look for ways to charge more of the production costs to the cost-plus jobs. His logic is that since those customers will pay all the costs plus a profit, they can improve their overall profitability by shifting costs from bid jobs to cost-plus jobs.

Answer the following questions:

1. Is the President correct about the increase in overall company profits?
2. What classification of cost is most likely to be able to be increased on the cost-plus jobs? Why?
3. Is what the President proposes ethical? Why or why not?
4. What would you do if you were Sally? Why?
5. If Sally does go along with this proposal, are there risks to the company? What are they?

1. How does HOME DEPOT'S ORGANISATIONAL STRUCTURE   design serve the firm’s markets and customers? Can it be improved?