Use the sample information x¯ = 40, σ = 7, n = 13 to calculate the following confidence intervals for μ assuming the sample is from a normal population.

(a) 90 percent confidence. (Round your answers to 4 decimal places.)
  
The 90% confidence interval is from ___ to ___

(b) 95 percent confidence. (Round your answers to 4 decimal places.)
  
The 95% confidence interval is from ___ to ___

(c) 99 percent confidence. (Round your answers to 4 decimal places.)
  
The 99% confidence interval is from ___ to ___

(d) Describe how the intervals change as you increase the confidence level.
  

• The interval gets narrower as the confidence level increases.

• The interval gets wider as the confidence level decreases.

• The interval gets wider as the confidence level increases.

• The interval stays the same as the confidence level increases.

Use the sample information x¯ ⎯ x¯ = 40, σ = 7, n = 13 to calculate the following confidence intervals for μ assuming the sample is from a normal population.

(a) 90 percent confidence. (Round your answers to 4 decimal places.)
  
The 90% confidence interval is from __to__

(b) 95 percent confidence. (Round your answers to 4 decimal places.)
  
The 95% confidence interval is from __to__

(c) 99 percent confidence. (Round your answers to 4 decimal places.)
  
The 99% confidence interval is from __to__

(d) Describe how the intervals change as you increase the confidence level.
  

A- The interval gets narrower as the confidence level increases.

B- The interval gets wider as the confidence level decreases.

C- The interval gets wider as the confidence level increases.

D- The interval stays the same as the confidence level increases.

Use the following information to run a t-Test in EXCEL.

Write a paragraph description about the information you found and the conclusions you can draw.  

"To Breakfast or Not to Breakfast?" by Richard Ayore

In the American society, birthdays are one of those days that everyone looks forward to. People of different ages and peer groups gather to mark the 18th, 20th, …, birthdays. During this time, one looks back to see what he or she has achieved for the past year and also focuses ahead for more to come.

If, by any chance, I am invited to one of these parties, my experience is always different. Instead of dancing around with my friends while the music is booming, I get carried away by memories of my family back home in Kenya. I remember the good times I had with my brothers and sister while we did our daily routine.

Every morning, I remember we went to the shamba (garden) to weed our crops. I remember one day arguing with my brother as to why he always remained behind just to join us an hour later. In his defense, he said that he preferred waiting for breakfast before he came to weed. He said, “This is why I always work more hours than you guys!”

And so, to prove him wrong or right, we decided to give it a try. One day we went to work as usual without breakfast, and recorded the time we could work before getting tired and stopping. On the next day, we all ate breakfast before going to work. We recorded how long we worked again before getting tired and stopping. Of interest was our mean increase in work time. My brother insisted that it was more than two hours.

What would this look like in Excel?

What is the interpretation of data?

In a new restaurant Jake’s offers three different burgers that is open 40 hours per week. Each
product requires the following processing times (in minutes) in each of three station.
Burger Max Burger Special Mega Burger
Grill 2 2 1
Preparation 3 4 6
Packaging 4 6 5
Each station must be run by one of 19 cross-trained workers who are each available 35 hours per week. The plant has 10 grills, 6 preparation stations, and 8 packaging machines available. The three products contribute $0.90, $1.20, and $1.50, respectively, in marginal profits per unit produced.
a) (4 Points) Formulate an LP model for this problem.
b) (1 Point) Can this problem be solved graphically? Argue your point.
c) (8 Points) What is the optimal solution?
d) (2 Points) Assume that the number of available workers is fluctuating. Describe two ways
how it can be tested whether these fluctuations lead to changes in the production plan.

"Stop and Frisk" Please respond to the following:

• Based on the information found in this chapter related to stop-and-frisk, examine two actions as they relate to the Fourth Amendment and the arrest process. In your opinion, which should have the greatest constitutional protection, stop or frisk? Why? Then, use the Internet to research, identify, and examine one stop-and-frisk case from within the last three years. Then share your opinion on the use of stop and frisk.

An economist is studying the job market in Denver area neighborhoods. Let x represent the total number of jobs in a given neighborhood, and let y represent the number of entry-level jobs in the same neighborhood. A sample of six Denver neighborhoods gave the following information (units in hundreds of jobs). x 13 33 50 28 50 25 y 1 2 6 5 9 3 Complete parts (a) through (e), given ?x = 199, ?y = 26, ?x2 = 7667, ?y2 = 156, ?xy = 1044, and r ? 0.845. (a) Draw a scatter diagram displaying the data. (b) Verify the given sums ?x, ?y, ?x2, ?y2, ?xy, and the value of the sample correlation coefficient r. (Round your value for r to three decimal places.) ?x = ?y = ?x2 = ?y2 = ?xy = r = (c) Find x, and y. Then find the equation of the least-squares line = a + bx. (Round your answers for x and y to two decimal places. Round your answers for a and b to three decimal places.) x = y = = + x (d) Graph the least-squares line. Be sure to plot the point (x, y) as a point on the line. (e) Find the value of the coefficient of determination r2. What percentage of the variation in y can be explained by the corresponding variation in x and the least-squares line? What percentage is unexplained? (Round your answer for r2 to three decimal places. Round your answers for the percentages to one decimal place.) r2 = explained % unexplained % (f) For a neighborhood with x = 40 hundred jobs, how many are predicted to be entry level jobs? (Round your answer to two decimal places.) hundred jobs

In this written assignment, select one cultural factor such as health beliefs, language, perception of time, environment control, etc. (see textbook reading) and apply it to a selected ethnic group. The paper will include the following:

One impact on medication preparation. Explain.

Two impacts on medication administration. Explain.

Two potential adverse reactions. Explain with rationale.

One possible issue in adherence to medication regimen. Explain how this can be overcome.

The paper should be no more than 3 pages. Use APA Editorial Format for all citations and references used.

Submit your completed assignment by following the directions linked below. Please check the Course Calendar for specific due dates.

Save your assignment as a Microsoft Word document. (Mac users, please remember to append the ".docx" extension to the filename.) The name of the file should be your first initial and last name, followed by an underscore and the name of the assignment, and an underscore and the date. An example is shown below:

Jstudent_exampleproblem_101504

Suppose that Xtel currently is selling at $40 per share. You buy 800 shares using $25,600 of your own money, borrowing the remainder of the purchase price from your broker. The rate on the margin loan is 10%.

a. What is the percentage increase in the net worth of your brokerage account if the price of Xtel immediately changes to (a) $44; (b) $40; (c) $36? (Leave no cells blank - be certain to enter "0" wherever required. Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)

b. If the maintenance margin is 20%, how low can Xtel’s price fall before you get a margin call? (Round your answer to 2 decimal places.)

Price            $

c. How would your answer to requirement 2 would change if you had financed the initial purchase with only $16,000 of your own money? (Round your answer to 2 decimal places.)

Strike price            $

d. What is the rate of return on your margined position (assuming again that you invest $25,600 of your own money) if Xtel is selling after one year at (a) $44; (b) $40; (c) $36? (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)

e. Continue to assume that a year has passed. How low can Xtel’s price fall before you get a margin call? (Round your answer to 2 decimal places.)

Price            $

Suppose that XTel currently is selling at $40 per share. You buy 800 shares using $25,600 of your own money, borrowing the remainder of the purchase price from your broker. The rate on the margin loan is 10%.

a. What is the percentage increase in the net worth of your brokerage account if the price of XTel immediately changes to (a) $44; (b) $40; (c) $36? (Leave no cells blank - be certain to enter "0" wherever required. Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)

b. If the maintenance margin is 20%, how low can XTel’s price fall before you get a margin call? (Round your answer to 2 decimal places.)

c. How would your answer to requirement 2 would change if you had financed the initial purchase with only $16,000 of your own money? (Round your answer to 2 decimal places.)

d. What is the rate of return on your margined position (assuming again that you invest $25,600 of your own money) if XTel is selling after one year at (a) $44; (b) $40; (c) $36? (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)

e. Continue to assume that a year has passed. How low can XTel’s price fall before you get a margin call? (Round your answer to 2 decimal places.)

One of largest banks in the country is researching the payment method used by restaurant customers. The interest is to know if customers have changed their method of payment with respect to last year. As the statistician in charge of the analysis you survey 220 restaurants and find historical information on payment method as shown in the table below. Allow 1% of error when performing the statistical test.

Category 2016 Market Share    2017-Observed

Credit card       0.60                   110

Debit card   0.20                        50

Personal check 0.05                            20

Cash 0.15 40

Total 1                        220

1. What is the expected value for each category?

2. What is the value of the test statistic you calculated for this problem?

3. What is the value of degrees of freedom?

4.What is the critical value for the given alpha?

5. What is your decision after performing the test?

6.What is your conclusion after performing the test? Be specific and relate to the problem.