Q- 2

You are a financial analyst for the Hittle Company. The director of capital budgeting has asked you to analyze two proposed capital investments, Projects X and Y. Each project has a cost of $10,000, and the cost of capital for each is 12%. The projects’ expected net cash flows are as follows:

Calculate each project’s payback period, net present value (NPV), and profitability index (PI).

6. Consider the following set of processes P1, P2, P3, P4.
Process Burst Time Arrival Time Priority
P1 3 0 1
P2 5 1 2
P3 8 3 3
P4 4 4 2
a) Draw Gantt charts that illustrate the execution of these processes using the following scheduling algorithms: first-come, first-served (FCFS), priority scheduling (larger number=high priority), and Round-Bobin (RR, quantum=2).
b) Compute the average waiting time, turnaround time for the three algorithms. Turnaround time – amount of time to execute a process (the time from submission to completion). Waiting time – amount of time a process has been waiting in the ready queue.

*Please answer in text format, not hand written*

The following data were obtained from a repeated-measures study comparing 3 treatment conditions. Use a repeated-measures ANOVA with a=.05 to determine whether there are significant mean differences among the three treatments (do all 4 steps of conducting a hypothesis test!!):

Complete a 2-3-page paper with an abstract and conclusion (plus cover sheet and reference page) that discusses:

1. How does a cloud based storage service differ from Software as a Service (SaaS)?

2. Give a brief overview of the following types of cloud based storage (Public, Private, Hybrid and Mobile).

3. What are the disadvantages and advantages to using cloud based storage?

4. What are the availability, performance, and security considerations?

Specific questions or items to address:

1. How does a cloud based storage service differ from Software as a Service (SaaS)?

2. Give a brief overview of the following types of cloud based storage (Public, Private, Hybrid and Mobile).

3. What are the disadvantages and advantages to using cloud based storage?

4. What are the availability, performance, and security considerations?

Let's consider a rigid system with three particles. Masses of these particles
m1 = 3 kgs, m2 = 4 kg, m3 = 2 kgs, and their positions are (1, 0, 1), (1, 1, -1) and
Let it be (1, -1, 0). Locations are given in meters.
a) What is the inertia tensor of the system?
b) What are the main moments of inertia?
c) What are the main axes?

THERE IS NO MORE INFORMATION AND PICTURE FOR THIS QUESTION, TY !

PotashCorp

The data set in the file ch18_MCSP_PotashCorp contains average quarterly share prices for PotashCorp and prices for potash mineral. Investigate the relationship between these variables. (a) Some people think that if the share price of a mining company is high, that is because investors expect high mineral prices for thecorresponding quarter. Can the potash price be estimated from the PotashCorp share price? The data includes a period when the price of potash mineral was exceptionally high. If you eliminate the quarters when the price of potash was over CDN$600/tonne, does that affect your analysis? (b) Other people think that if the price at which a mineral can be sold is high, then the share price of the companies producing that mineral will also be high. Is that the case for PotashCorp? That is, can PotashCorp’s share price be estimated from the potashmineral price? If you eliminate the quarters when the price of potash was over CDN$600/tonne, does that affect your analysis? (c) Compare your answers to (a) and (b) including R-squared, P-value for slope, and the regression lines themselves.

Share Buy-Backs and Special Dividends in Canada

PotashCorp announced a program to buy back up to 5% of its common shares between August 2013 and July 2014.

When a company has a strong balance sheet with surplus cash, it needs to find a use for that cash consistent with its strategic goals and the current business environment. When economic conditions aren’t favourable for spending the cash to pay off debt, acquire another company or expand operations, it can use its cash in two other ways: (1) announcing a special dividend, and (2) buying back shares, otherwise known as stock repurchase agreements. Both of these options return value to shareholders. The difference between them is that share buy-backs can be done gradually over several quarters and the amount of the buy-back can be adjusted to the surplus cash available in future quarters; special dividends, on the other hand, require the company to be pretty certain that a base level of surplus cash will continue to be available in future quarters.

Suppose you’re advising the board of directors of a major company that needs to decide between a share buy-back and a special dividend. Surplus cash during the past eight quarters is given in the table. (Quarter 8 is the most recent.)

The board will issue a special dividend if it can be both 95% certain that surplus cash will exceed $1.15 billion in quarter 9 and 95% certain that it will exceed $1.2 billion in quarter 10. It will announce a share buy-back program if it can be both 90% certain that the total surplus cash from quarter 9 will exceed $1.15 billion and that the surplus cash from quarter 10 will exceed $1.2 billion. Use linear regression to advise the board of directors about its options.

The data is given below

A researcher is investigating the effects of ambient noise on the ability of rats to learn to navigate a maze. A total of 10 rats were tested, half were randomly assigned to a no noise condition and the other half assigned to a loud ambient noise condition. For each rat, the researcher determined how many trials it took to run the maze without any errors. The results are summarized in the chart below.

Approximately what are the estimated variances of the population(s) (Hint: use the Squared Deviations from the mean to save time)?

Approximately what is the pooled variance?

Approximately what is the estimated standard deviation of the distribution of differences between means?

What is the obtained value of t and would you retain or reject the Null Hypothesis?

Taking the difference between the means to be a positive difference, approximately what is the 95% confidence interval for the difference between means and would you retain or reject the null hypothesis?

Suppose that one of the rats in the no noise condition died during the experiment. Could the researcher proceed with the analysis? If so what would the degrees of freedom associated with the critical test statistic be?

XYZ stock price and dividend history are as follows:

An investor buys six shares of XYZ at the beginning of 2015, buys another two shares at the beginning of 2016, sells one share at the beginning of 2017, and sells all seven remaining shares at the beginning of 2018.

b-1. Prepare a chart of cash flows for the four dates corresponding to the turns of the year for January 1, 2015, to January 1, 2018. (Negative amounts should be indicated by a minus sign.)

b-2. What is the dollar-weighted rate of return? (Hint: If your calculator cannot calculate internal rate of return, you will have to use a spreadsheet or trial and error.) (Negative value should be indicated by a minus sign. Round your answer to 4 decimal places.)

Some of the green thumbs were talking one day and determined that there were about 4 factors that had a significant impact on the growth of a plant during any one phase.

These factors are: 1) Temperature 2) Water 3) Fertilizer 4) Carbon Dioxide Level.

The green thumbs thought that at least two of these factors interacted with each other, so they wanted to design an experiment to test the effects of these factors on the growth of the azaleas. They asked you to create a two-level experiment so they could determine the optimum levels for each factor. They told you that the high and low for temperature should be 75 and 90 degrees F. Water should be 1 and 4 oz. per day per container.

Fertilizer should be at 2 and 4 tablespoons per container, and the carbon dioxide content should be between .03% and .04%.

Create an experimental design such that there are 2 replications for each treatment.

Discuss the importance of randomization. Also, discuss the importance of identifying interaction, and what impact it has on your decision-making. That is, in the presence of significant main effects and significant interaction, how do you determine the optimal settings of the factors?

A social psychologist hypothesizes that more Facebook use is related to less depression. The psychologist collects hours on Facebook and depression score data from a sample of clinically depressed patients. What can be concluded with an α of 0.01?

a) Compute the correlation statistic.


b) Obtain/compute the appropriate values to make a decision about H₀.
(Hint: Make sure to write down the null and alternative hypotheses to help solve the problem.)
critical value = _____________ ; test statistic = _____________
Decision:  ---Select--- Reject H0 Fail to reject H0

c) Compute the corresponding effect size(s) and indicate magnitude(s).
If not appropriate, input and/or select "na" below.
effect size = _____________ ;   ---Select--- na trivial effect small effect medium effect large effect

d) Make an interpretation based on the results.

1)There is a significant positive relationship between depression and using Facebook.

2)There is a significant negative relationship between depression and using Facebook.   

3) There is no significant relationship between depression and using Facebook.