Perform the hypothesis tests below, show your steps and calculations. Identify the distribution that you will be using for each one. Please remember to draw your conclusions and interpret your decisions

1-According to the National Coalition on Health Care, the mean annual premium for an employer health plan covering a family of four cost $11,500 in 2007. A random sample of 100 families of four taken this year showed a mean annual premium of $11,750. Assuming $1500  = , test whether the mean annual premium has increased, using a 0.05 significant level. Use the p-value method

2- Health issues due to being overweight affect all age groups. Of children and adolescents 6 – 11 years of age, 18.8% are found to be overweight. A school district randomly sampled 130 students in this age group and found that 20 were considered overweight.   At the 90% level of confidence, is this less than the national proportion? Use the p-value method.

Merliss Company (a specialty bike-accessory manufacturer) is expecting growth in sales of some products targeted to the low-price market. Merliss is contemplating a preference share issue to help finance this expansion in operations. The company is leaning toward preference shares because ownership will not be diluted, but the investors will get an extra dividend if the company does well. The company management wants to be certain that its reporting of this transaction is transparent to its current shareholders and wants you to research the disclosure requirements related to its capital structure.

Instructions If your school has a subscription to the FASB Codification, go to http://aaahq.org/ascLogin.cfm to log in and prepare responses to the following. Provide Codification references for your responses.

(a) Identify the authoritative literature that addresses disclosure of information about shareholders’ equity.

(b) Find definitions of the following:

(1) Securities.

(2) Participation rights.

(3) Preferred stock.

(c) What information about securities must companies disclose? Discuss how Merliss should report the proposed preferred stock issue.

As a criminologist, you are interested in the factors related to juvenile offending. You think that time spent studying influences delinquent behavior. In a group of 21 high school students, you collect information about the number of times a juvenile has broken curfew this month and how much time they spend studying this month. You break the sample into three groups, those who spend no time studying, those who spend less than 1 hour per day, and those who spend more than 1 hour per day).

a) What is the independent variable?              

b) What is the dependent variable?

c) What is the null hypothesis?

d) What is the research hypothesis?

e) Interpret the results.

Let’s consider a study that followed a randomly selected group of 100 State U students during a two-year period at the school. The study found that a linear relationship exists between the number of hours students spend engaging in social media each week and their cumulative gpa during the two-year period. The model for this relationship can be given by the equation

g?pa = −0.032 × (hours) + 2.944 (a) Interpret the slope of the line in the context of the data.

(b) The residual gpa for a particular student who spent 20 hours per week using social media was found to be 0.476. What was this student’s cumulative gpa during the two-year period?

(c) Would the correlation coefficient for the linear relationship be positive or negative? Explain.

(d) If another study found that the linear correlation coefficient between a student’s gpa and the number of hours spent at the library was r = 0.46, could you conclude that this relationship is stronger than the one between gpa and hours spent on social media? Explain.

You are a computer scientist. You are in a real financial dilemma. You have a family to care for and children to school. You have a son who is supposed to undergo a surgical operation but you cannot afford the operation expenses. Doctors say that delaying the operation may expose his life to a danger. You know that a friend of yours has recently developed a competitive computer program. You also know that he spent few months working on it and it cost him much. You can successfully, with no chance of being discovered, pirate this program and sell it at tens of thousands of dollars, and thus pay your son's operation expenses.

Read and answer the following questions:


5- Seek help ( for example to ask for help from brother or something like that) ?

6-Find any possible solutions for the problem ( as many as possible)?

7- Find the consequences of each possible solution?

8-identify the best solution and why you chose it ?

I hope you can help me solve these questions ...

Suppose we can think of dividing a person’s working years up into three periods. The person has three alternatives. The first is for her to start working immediately, earning $100,000 ($100k) in period 1, $110k in period 2, and $90k in period 3. The second is to spend $50k to attend college in period 1, then earn $180k in each of periods 2 and 3. The third is to attend college in period 1 (as in the previous option), attend graduate school in period 2 (which entails no spending or earnings), and earn $400k in period 3.

a. If her period discount rate is 20%, which option maximizes the net present value (NPV) of her lifetime earnings (net of costs)?

b. How low must her discount rate get to change the answer you got for part (a)? (Using a spreadsheet would be very helpful. Try lowering her discount rate 1 percentage point at a time so see how the NPV of each alternative is affected.)

Answer the following questions: a) Draw a production possibilities curve showing the number of apples and pears that one person can pick in a given time period.

(i) Show efficient, inefficient, and impossible levels of output.

(ii) Why does the curve slope downwards?

(iii) What does the model tell us about the principle of opportunity cost?

(iv) Explain why a combination of apples and pears (i.e. a level of output at a middle point along the curve) gives you more fruit that if you had picked only apples.

(v) Why is the curve not a straight line? b) Ada, Brenda and Cathy are good friends since high school. All of them have just completed a degree in Business Administration. Brenda is an average student in both management and marketing. Ada is a top student in marketing and is only okay in management. However, Ada is still better than Brenda in both areas. Cathy is good in management but very poor in marketing.