1. For a Normal distribution N (μ, σ), if we know the population standard deviation then we can make an inference about:

1. Mode

2. Range

3. Mean

4. Median

2. The Normal Distribution curve of heights of a large population of people indicates that the mean height (μ) of the population is 5 feet 6 inches. The 1 standard deviation (σ) in height variation is 2 inches. The people who have the heights between 5 feet 2 inches and 5 feet 10 inches represent:

   1. the range of +1σ to -1 σ

   2. the range of +2σ to -2 σ

   3. the range of +3σ to -3 σ

3. The Normal Distribution curve of heights of a large population of people indicates that the mean height (μ) of the population is 5 feet 3 inches. The 1 standard deviation (σ) in height variation is 2 inches. The people who have the heights between 4 feet 11 inches and 5 feet 7 inches represent:

   1. the range of +2σ to -2 σ

   2. the range of +σ to -σ

   3. the range of +3σ to -3 σ

20. The Normal Distribution curve of heights of a large population of people indicates that the mean height (μ) of the population is 5 feet 5 inches. The 1 standard deviation (σ) in height variation is 2 inches. The people who have the heights between 5 feet 3 inches and 5 feet 7 inches represent:

    1. the range of +2σ to -2 σ

    2. the range of +σ to -σ

    3. the range of +3σ to -3 σ

CENTRAL LIMIT THEOREM (Sampling Distribution)

28. According to the Central Limit Theorem , as the SRS increases, that is as n INCREASES, the sample mean is

1. Closer to the population mean µ

2. Away from the population mean µ

29. According to the Central Limit Theorem, as the SRS increases, that is as n INCREASES, the sample distribution becomes

1. Left-skewed distribution

2. Right-skewed distribution

3. Normal Distribution

A random survey test was given to 100 students. The average score (mean) x was 75. The standard deviation, σ, was 20. Answer the following questions based on this information. Note: n = 100 and look at PPT on Confidence Interval posted on BB.

30. The ‘Law of Large Numbers’ states that as no. of observations drawn INCREASES, the observed mean gets closer to the

1. Standard deviation of the population

2. Probability of the population

3. Mean of the population

31. The standard deviation of a Normal Distribution of IQ of a population of adults is 15. For a simple random size (SRS) of 9 from this population, the standard deviation for the sampling distribution will be:

1. 15

2. 15/9

3. 9

4. 5

32. The 95%-confidence interval means that we got these numbers using a method that gives CORRECT results …… of the times.

1. 68%

2. 100%

3. 99.7%

4. 95%

33. The 95%-confidence interval means that the MARGIN OF ERROR is only:

1. 95%

2. 5%

3. 68%

4. 99.7%

34. The margin of error for a sample of n =1000 will be ……. for a sample of n =50.

1. Less than

2. Greater than

3. Equal to

35. For a sample size of ‘N’ the degrees of freedom for some statistical tests can be computed from the formula:

1. N-5

2. N-2

3. N-3

4. N-4

HYPOTHESIS TESTING (Read the chapter and you will find the answers)

36. A Hypothesis always refers to a …….of population.

1. Mean

2. Standard deviation

37. The hypothesis that “The more beer you drink…the higher your blood alcohol level will be” an example of:

    1. Null Hypothesis

    2. Alternative Hypothesis

38. The value of α = 0.05 means that we are requiring that data give evidence AGAINST the Null Hypothesis so strong that it would happen ……… of the time.

1. No more than 95%

2. No less than 95%

3. No more than 5%

4. No less than 50%

3. Work is inputted to isothermally move a 1500 Kg mass from an elevation of zero to 35m and to change it velocity. The initial velocity of the mass is 0.55 m/s. The drag work for this process is described by a force which varies over the distance travel, F = ax + b; where F is in Newtons, the coefficient (a) has units of N/m and the constant (b) has units of N. For this application a = 4.1 N/m and b = 700 N. The force is applied over a distance of 1730 m. There is a heat loss from friction of 1.1(106 ) J during this process. Determine the final velocity of the mass.

3b. The input work for this process is from a combustion engine that has an efficiency of 0.28. The heating value of the fuel is 30.0 MJ/liters and its cost is $0.83/liter. Determine the volume of fuel required and its cost to perform the process described in (3.).

Please solve with sketches and clear equations. Thanks!

Henry Hawkins Industries of Batavia, Ohio, manufactures and sells one product. The company assembled the following projections for its first year of operations:

During its first year of operations Henry Hawkins expects to produce 25,000 units and sell 20,000 units. The budgeted selling price of the company’s only product is $66 per unit.

Required:

(answer each question independently by referring to the original data):

1. Assuming that Henry Hawkins' projections are accurate, what will be its absorption costing net operating income (loss) in its first year of operations?

2. Henry Hawkins is considering investing in a higher quality raw material that will increase its direct materials cost by $1 per unit. It estimates that the higher quality raw material will increase sales by 1,000 units. What will be the company’s revised absorption costing net operating income (loss) if it invests in the higher quality raw material and continues to produce 25,000 units?

3. Henry Hawkins is considering raising its selling price by $1.00 per unit with an expectation that it will lower unit sales by 1,500 units. What will be the company’s revised absorption costing net operating income (loss) if it raises its price by $1.00 and continues to produce 25,000 units?

4. Assuming that Henry Hawkins' projections are accurate, what will be its variable costing net operating income (loss) in its first year of operations?

5. Henry Hawkins is considering investing in a higher quality raw material that will increase its direct materials cost by $1 per unit. It estimates that the higher quality raw material will increase sales by 1,000 units. What will be the company’s revised variable costing net operating income (loss) if it invests in the higher quality raw material and continues to produce 25,000 units?

6. Henry Hawkins is considering raising its selling price by $1.00 per unit with an expectation that it will lower unit sales by 1,500 units. What will be the company’s revised variable costing net operating income (loss) if it raises its price by $1.00 and continues to produce25,000 units?

7. What is Henry Hawkins' break-even point in unit sales? What is its break-even point in dollar sales?

8. What is the company’s projected margin of safety in its first year of operations?

Paula's Pralines produces pralines in a highly, but not perfectly, competitive market. Paula rents her commercial kitchen for $150/day. Each 100 pralines costs Paula $65 for ingredients and one hour of labor. Paula pays her workers $10/hour. Demand for Paula's Pralines is given in the demand schedule below.

1. Fill in a table like the one below showing Paula's costs and revenues for one day. Included the values given for price and quantity, as well as total revenue (TR), marginal revenue (MR), total fixed cost (TFC), total variable costs (TVC), total cost (TC), marginal cost (MR), average total cost (ATC), and average variable cost (AVC), and profit.
2. Graph Paula's demand, MR, MC, ATC, and AVC curves. Indicate on your graph Paula's profit-maximizing price and quantity.
3. Write an analysis of Paula's firm, including the answers to the following questions, remembering to craft your response as a paper rather than as the answers to a series of short answer questions.
   • Identify Paula's fixed and variable expenses.
   • Explain what happens to ATC and AC as output increases and why this happens.
   • Explain what happens to MR as output increases and why this happens.
   • Explain how you determined the profit-maximizing price and quantity.
   • Illustrate why this is profit-maximizing by explaining what would happen if Paula tries to raise or lower her price while still producing the same quantity.
   • What is most likely to happen in the handmade candy market in this town?
4. Paula's town is growing rapidly and a shortage of spaces to rent develops, so Paula's landlord, like most in town, doubles her rent.
   • Complete a new table of costs with the rent now $300/day. (Hint: Copy and paste your table from #3, then change only the numbers which will be different now.)
   • At what price and quantity should Paula operate now? What are the long-run implications for Paula's business?
5. Because of the increase in rents, the city decides to implement a minimum wage of $15/hour.
   • Complete a new table of costs with the cost of labor now $15/hour.
   • At what price and quantity should Paula operate now? What are the long-run implications for Paula's business?
   • What will probably be happening in the industry now?

-I need help finishing the graph above

How would I create a network using packet tracer with these attributes?  

6 workstations, 1 switch (2950T), Subnet for the is 10.10.10.0/28 , Create 2 VLANs on each switch (VLAN 10 and 20), Add 3 workstations to VLAN 10 and 3 workstations to VLAN 20, Only workstations on the same VLAN should be able to communicate with each other

Please, list some key characteristics of public and private real estate.

What is the intensity in W/m² of a laser beam used to burn away cancerous tissue that, when 93.5% absorbed, puts 493 J of energy into a circular spot 2.13 mm in diameter in 3.70 s?

_______________W/m²

How many times more intense is this than the maximum intensity of direct sunlight (about 1360 W/m²)?

_______________

Given an array of integers, implement (in Java) the moveAllNegativeOne method to

move all -1 present in the array to the end. The algorithm should maintain the relative

order of items in the array and worst-case running time complexity must be linear.

Example:

Input: [6, -1, 8, 2, 3, -1, 4, -1, 1]

Output: [6, 8, 2, 3, 4, 1, -1, -1, -1]

Important Notes:

• You must add the main method in your program in Java in order to test your

implementation.

• You can use the array of the previous example to test your program, however, I

suggest that you also use other input arrays to validate the correctness and

efficiency of your solution.

• Your program MUST be submitted only in source code form (.java file).

• A program that does not compile or does not run loses all correctness points.

• Comment on all functions purposes

Consider the reaction below and select the appropriate response for each mixture of reactants that follows. RESPONSES: LR = limiting reactant, XSR = excess reactant or stoichiometric quantities

2Ag + S → Ag₂S

a) 100 g Ag + 100 g S
b) 4.0 mol Ag + 2.0 mol S
c) 400 g Ag + 50 g S
d)15 atoms Ag + 10 atoms S

GHI Ltd. manufactures two different chairs, Trippo and Trappo, for which the following information is available:

Costs per unit                              Trippo                Trappo

Direct materials                               75                     90

Direct labour                                  60                     80

Variable overhead                              105                    128

Fixed overhead                                 90                     112

Total costs per unit                          330                    410

Price                                          360                    450

Units sold                               1,500 units            1,000 units

The average wage rate including fringe benefits is 20 per hour. The plant has a maximum capacity of 10,000 direct labour hours for each period. The current production uses only 8,500 direct labour hours of the capacity. GHI Ltd. can hire additional direct labour up to its maximum capacity of 10,000 labour hours.

a)    A new customer has offered to buy 400 units of Trippo if GHI Ltd.     lowers its price to 300 per unit. How many labour hours will be required to produce 400 units of Trippo?

b)    How much will GHI’s profit increase or decrease if it accepts this

proposal? (Assume all other prices will remain as before.)

c)    The next period the same customer wants to buy 600 units of Trippo    at the same price (300 per unit). He underscores that he will find      another supplier if GHI is not able to deliver 600 units to that      price. How much will the profits increase or decrease if it accepts this proposal?

The sales manager of GHI Ltd. wants to keep this new customer because this is a well-known business. Thus, he thinks that the prices to the other customers could be increased a little in order to compensate for the lower price that is achieved regarding the new customer. He wants to have a piece of advice from you.

d)    What is your advice? Please underpin your suggestions.

Nouveaux Toys Inc., manufactures plastic rubber ducks. In June, Nouveaux reported the following data:

1. All direct materials are added at the beginning of the process.
2. Beginning work-in-process consisted of 3,000 units, 30 percent complete with respect to direct labor and overhead. Costs in beginning inventory included direct materials, $450; and conversion costs, $138.
3. Costs added to production during the month were direct materials, $950; and conversion costs, $2,174.50.
4. Inspection takes place at the end of the process. Malformed units are discarded. During normal operations, 0.5% of the units started will end up being malformed and discarded.
5. During the month, 7,000 units were started and 8,000 good units were transferred out to Finishing. All other units finished were malformed and discarded. There were 1,000 units that remained in ending work in process, 55 percent complete.
6. Remember to round your decimal points to four places for cost/EU rates.

Required:

1. Prepare a physical unit flow schedule.
2. Calculate the 1) cost of goods transferred out, 2) ending work-in-process, and 3) loss due to spoilage using the weighted average method.
3. Prepare the journal entries to record 1) and 3) above. Reconcile these journal entries with beginning work in process to ensure that ending work in process matches 2).
4. Calculate the 1) cost of goods transferred out, 2) ending work-in-process, and 3) loss due to spoilage using the FIFO method.
5. Prepare the journal entries to record 1) and 3) above. Reconcile these journal entries with beginning work in process to ensure that ending work in process matches 2).
6. Assume instead that inspection takes place when units are 40 percent complete. How does this change the number of units spoiled? How does this change the number of units that were abnormal spoilage v. normal spoilage?

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

int main() {   

srand(time(NULL)); // randomize

int *a; // pointer to array

int i, n;

printf("Size of array:");

scanf("%d", &n);

/* memory allocation */

a = (int*)malloc(n*sizeof(int));

/* array generating */

for (i = 0; i < n; i++) a[i] = rand()%101;

/* output */

for (i = 0; i<n; i++) printf("a[%d] = %d ", i, a[i]);

putchar('\n');

free(a);

return 0;  

}

Using the above code please do it to me following

334423. #1: Study Programming at the Kernel Level
        Write a program that creates an array of 100 random numbers from 0-99. The program sums the random numbers and prints the sum. It then writes the numbers to a new file using open, close and write.
        Other requirements:

1. Input—The program has no input data (it uses standard function to generate sequence of random numbers).
2. Output—The program prints the sum of the array. The program creates a file called numbers.XXXX where XXXX is the sum of the numbers in the file.
3. Program structure—The program has needs only one function: int main(void)

Hints:

Remember to initialize any sum variable to 0

rand() will return a random number too big for 0-99. Use modulo to reduce the range.

rand() needs to be initialized with a seed. You can use: srand(time(0));

334423. #2: Write a program that looks in the current directory for files that match the pattern “numbers.XXXX”. For each file, open the file and read the file. You can assume that the file will contain 100 integers. Sum the integers. Print the filename and the sum of the integers.

Hints:

Make a function to deal with open/read/sum/print/close.

opendir() requires a starting directory. You want to start where in the current directory.

You need to loop over the directory entries. This is similar to walking a linked list.

You want to check every file entry to see if it starts with “numbers.”

1. Given the success in El Salvador, do you think the other countries in CAFTA-DR should adopt the U.S. dollar as their currency? Why or why not?