Using SPSS:

You are conducting an experiment to see if growing up bilingual has any effect on a person’s verbal ability later in life. You recruit two groups of subjects: Group 1 consists of native English speakers that speak no other languages. Group 2 consists of people who speak English and at least one other language fluently, and they acquired their second language before the age of 12. Group 1 has 41 subjects, and Group 2 has 37. Verbal ability is measured through a standardized test, that is scored on a scale of 0-100. Each subject is administered the test, and their scores are recorded.

[40 pts] Next, you want to compare the scores of the two groups. You believe that the bilingual subjects (Group 2) will score higher on average than the monolingual subjects (Group 1). Use group1.sav and group2.1.sav for this problem.

What test should you perform here? [5 pts]

What are the distributions of each group? [5 pts]

What are the null/alternative hypotheses? [5 pts]

Run the test in SPSS. [5 pts]

Report your results, as in part 1. [10 pts]

Make a plot comparing the distributions of the two groups. [10 pts]

group1.sav:

84.0781458648940
78.1659813381156
83.2097990726180
74.6179953832211
80.2209401911208
84.9246643735632
79.5972632452217
80.3692891088453
75.5014243441437
76.8739343384229
83.9250985668693
75.3718964391512
78.9411130336794
80.1669903661018
78.2992377573003
78.7896332931477
71.0962392023740
84.1626256134368
82.4740174461893
78.3526586448991
73.3404985790769
83.2337839161124
84.6766160746263
70.7541667161686
83.1011338187307
77.5797973931312
81.3983154504291
78.7066558698611
86.2556403970559
74.8616971481931
81.7496553846257
76.1337325292457
76.4781081018565
79.1532261410977
80.6304842615301
84.1827007993516
80.7528310629980
71.3705246775774
78.5325983274464
78.0476329999499
87.2320045671994

group2.1.sav:

80.8028582039345
92.1782185508421
81.7624767266380
87.6090549775763
81.7988630107953
79.6059009502792
91.0122984144023
79.6806829604419
75.3399990115149
81.3053918211527
82.8035549255071
81.1637179049344
85.3632256665115
86.7573961689029
79.4778738319496
80.9349084875013
81.5921214879792
80.7109217300939
76.3139725547807
82.1414651646484
75.8356344963212
78.0785409762354
81.7487710395530
82.8013055546603
81.0426679680293
85.9590818056062
76.2803153724397
78.6593661496306
80.2492762839822
80.4885216555969
73.6726193385933
85.7176440415797
85.1825156137993
87.8187958603501
79.5842202611197
81.9787940432406
91.0181477610718

In addition to defining terms provide one real-life example that explains the definition.

transactional leaders

In addition to defining terms provide one real-life example that explains the definition.

Leader-Follower Congruence

1. The ultimate goal of HCI design is about usability. Describe what usability is and identify 5 factors to measure usability?
2. What is cognitive aide and what is the theory behind this? Give three examples to describe how cognitive aides are used in user interface design?
3. Design of an HCI element typically follows Norman’s seven stages of action. With an example. Briefly explain Norman’s seven stages action.
4. Metaphors are powerful designs if done properly. Explain the idea of a metaphor and give two examples of using metaphors in user interface design. What are the 3 advantages and 3 disadvantages of using metaphors?
5. Heuristic evaluation and cognitive walk through are commonly used for HCI design. Briefly explain how to conduct a heuristic evaluation and how to conduct cognitive walk through?

1. Calculate the moment of inertia for the circle square rectangular u calculate the moment of inertia and polar moment of inertia for the profile (we will give the values ​​ourselves).
2. Select a material based on iron and find sigmad, Re, Rm values, scale will be drawn according to goodman, gerber, soderberg etc. scale according to brittleness, and stress amplitude and max stress will be calculated.
3. Smith diagram of the material we selected for the second question will be drawn.

PLEASE EXPLAIN THE ANSWER STEP BY STEP

Automatic versus Manual Processing
Photo Station Company operates a printing service for customers with digital cameras. The current service, which requires employees to download photos from customer cameras, has monthly operating costs of $5,000 plus $0.20 per photo printed. Management is evaluating the desirability of acquiring a machine that will allow customers to download and make prints without employee assistance. If the machine is acquired, the monthly fixed costs will increase to $10,000 and the variable costs of printing a photo will decline to $0.04 per photo.

(a) Determine the total costs of printing 20,000 and 50,000 photos per month.

(b) Determine the monthly volume at which the proposed process becomes preferable to the current process.
Answer

units

Home vs Road Wins – Significance Test: For the NHL regular season, the Chicago Blackhawks won 27 out of 41 home games and won 18 out of 41 away games. Clearly the Blackhawks won a greater proportion of home games. Here we investigate whether or not they did significantly better at home than on the road. The table summarizes the relevant data. The p̂'s are actually population proportions but you should treat them as sample proportions. The standard error (SE) is given to save calculation time if you are not using software.

Data Summary

SE = 0.10990

The Test: Test the claim that the proportion of wins at home was significantly greater than on the road. Use a 0.05 significance level.

(a) Letting p̂₁ be the proportion of wins at home and p̂₂ be the proportion of wins on the road, calculate the test statistic using software or the formulaz =

where δ_p is the hypothesized difference in proportions from the null hypothesis and the standard error (SE) given with the data. Round your answer to 2 decimal places.
z =
To account for hand calculations -vs- software, your answer must be within 0.01 of the true answer.

(b) Use software or the z-table to get the P-value of the test statistic. Round to 4 decimal places.
P-value =

(c) What is the conclusion regarding the null hypothesis?

reject H₀

fail to reject H₀    

(d) Choose the appropriate concluding statement.

The data supports the claim that the proportion of wins at home was significantly greater than on the road.

While the proportion of wins at home was greater than on the road, the difference was not great enough to be considered significant.    

We have proven that the Blackhawks always do better at home games.

We have proven there was no difference in the proportion of wins at home than wins on the road.

Write a Java program

1-)write a program that simulates a vending machine, takes input from the user (money), and returns the change to the user.

The change means

Quarter =   25 cent

Dime = 10 cent

Nickels = 5 cent

Pinneies = 1 cent

2-) What is the output produced by the following code?

• int result = 11;
• result /= 2;
• System.out.println("resu lt is " + result);

Create a smoking-cessation program using the four elements of persuasion, McGuire’s Persuasive Communication Model, and Learning Theories. Your program can include group activities, campaign slogans, mass media, and any other behavior modification techniques that we discussed in class. Be sure to clearly explain each technique that you are using and give a rationale. (minimum 4 typed pages)

Why is it important to have a Network Security?

Discuss the use of network security components.

Why is it important to use Firewall for Computer Networks?

Assignment6A: This used to be entertainment. If you haven’t played the classic game Pong, then you are now required to do so. Though it doesn’t capture the poor quality of the original, you can find an emulator at Pong-2.com. Play it (using the keyboard).   Do you see how the ball bounces off of the walls and the paddles? You’re going to learn how to do this by creating class Ball.

A Ball has an X and Y position. Equally important, a ball has an x velocity and a y velocity. Every time the ball moves (in one unit of time), it changes its X and Y position by its x and y velocity. However, before moving it, you need to check to see if it’s touching a wall. If so, you need to reverse either its x or y velocity depending on whether or not its touching a wall. What is the ball’s location if its touching a wall? For simplicity, we’re going to assume that the ball is on a 10x10 field and that the x and y velocities can only be -1, 0, or +1.

Your task is to 1) write class Ball that has the variables/attributes above, 2) has a constructor that takes in the starting X and Y position as well as the starting X and Y velocity, 3) has a method called “move” that takes no parameters and updates the position of the ball and 4) has a print statement called “print” that takes no parameters and prints out the ball’s current position.

You must call the class “Ball” and put it in a file called Ball(.java, .cs, .cpp, .h). To test your ball, you should create a file called Assignment6A(.java, .cs, .cpp) that creates a ball based off of user input and calls the “move” and “print” methods of the ball the number of times the user wants. It should behave like the sample output below.

An open empty tank (filled with atmospheric air at 27oC and 100 kPa) is filled with liquid nitrogen as much as 14 kg quickly. After that, the tank is immediately closed and allowed to stand for a certain period of time. The tank is equipped with an open pipe manometer where the manometer fluid used is mercury (s.g. = 13.55). In the condition of the closed tank, the results of reading the manometer when it is constant shows that the difference in mercury surface height is 38 cm.

If it is assumed:
1. This system runs isothermal.
2. Nitrogen gas and air follow the ideal gas principle.
3. During the tank closing process, no nitrogen gas is lost.
4. Because liquid nitrogen intake and tank closure are fast, the volume of liquid nitrogen can be neglected meaning that at t = 0, the tank is considered to only contain air.

Therefore,
a. Determine the tank volume used!
b. Determine the number of moles of air in the tank!
c. Determine the specific gravity value of the gas mixture!

Lynda Corporation manufactures two typed of glass sheets: clear glass and colored glass. Department 1 produces clear glass sheets, some of which we sold as finished goods. Others are transferred to Department 2, which adds additional materials to the clear glass sheets to form colored glass sheets, which are sold and finished product. The company something something operation something systems.

During the period, 2 jobs, were completed. Job Alpha was for 10,000 clear glass sheets and required in $200,000 materials. Job Beta was for 5,000 colored sheets and called for materials of $100,000 in department 1 and additional materials of $40,000 in Department 2.

The company strictly adhered to a Just-In-Time (JIT) inventory system for work in process

Conversion costs for the period were as follows:

Department 1              $180,000

Department 2              $50,000

Calculate the cost per unit transferred to finished goods inventory for each job, Alpha and Beta

$_____________   $______________

Alpha                          Beta

Job Beta is being sold to the government on a cost-plus basis. The vice president of marketing suggests that the conversion costs from Department #1 could be allocated on the basis of materials costs, so that he can offer a lower price for Job Alpha.

What do you think of this idea? Does it sound right? Are there any other issues here? Would you advise the company to do this? Explain.

Please show all work!!