You are trying to decide how much to save for retirement. Assume you plan to save $ 7,000 per year with the first investment made one year from now. You think you can earn 7.5​% per year on your investments and you plan to retire in  31 ​years, immediately after making your last $ 7, 000 investment.

a. How much will you have in your retirement account on the day you​ retire.The amount in the retirement account in 31years would be?Round to the nearest​ cent.)

b.​ If, instead of investing $ 7,000 per​ year, you wanted to make one​ lump-sum investment today for your retirement that will result in the same retirement​ saving,

how much would that lump sum need to​ be?Round to the nearest​ cent.)

c. If you hope to live for 20 years in​ retirement, how much can you withdraw every year in retirement​ (starting one year after​ retirement) so that you will just exhaust your savings with the 20th withdrawal​ (assume your savings will continue to earn 7.5​% in​ retirement)?

The amount you can withdraw every year in retirement is? ​(Round to the nearest​ cent.)

d.​ If, instead, you decide to withdraw $ 157,000 per year in retirement​ (again with the first withdrawal one year after​ retiring), how many years will it take until you exhaust your​ savings? (Use​ trial-and-error, a financial​ calculator: solve for​ "N", or​ Excel: function​ NPER)  ​(Round to two decimal​ places.)

You will exhaust your savings in? years (Round to two decimal​ places.)

e. Assuming the most you can afford to save is $ 1,400 per​ year, but you want to retire with $ 1,000,000 in your investment​ account, how high of a return do you need to earn on your​ investments? (Use​ trial-and-error, a financial​ calculator: solve for the interest​ rate, or​ Excel: function​ RATE) ​

You will need a return of ?(Round to two decimal​ places.)

Exercise 6: Dog Years It is commonly said that one human year is equivalent to 7 dog years. However this simple conversion fails to recognize that dogs reach adulthood in approximately two years. As a result, some people believe that it is better to count each of the first two human years as 10.5 dog years, and then count each additional human year as 4 dog years. Write a program that implements the conversion from human years to dog years described in the previous paragraph. Ensure that your program works correctly for conversions of less than two human years and for conversions of two or more human years. Your program should display an appropriate error message if the user enters a negative number.

code by python

1.) In one or two sentences, describe how to use and interpret the result from each of the following to measure pH.

a.) acid-base indicator solutions.

b.) universal indicator paper.

c.) pH meter.

d.) if a solution had [h⁺] = 4.9 * 10^-7, what is the pH?

LAB Reaction Rates

Objectives

• Evaluate the effect of concentration on the rate of a chemical reaction. ν

• Examine the effect of temperature on the rate of a chemical reaction.

Background: Many people believe that you cannot perform chemical reactions without expensive equipment or costly chemicals. But this isn’t true; chemical reactions happen everywhere. All you need is a food store to find many substances that can produce exciting chemical reactions.

Preparation

Materials

Safety Precautions

Procedure

1. Read the procedure and safety information, and complete the lab form.

2. Make data tables similar to those shown on the next page.

3. Prepare a 50 percent vinegar solution by mixing 30 mL of vinegar with 30 mL of water. This is solution A.

4. Prepare a 30 percent vinegar solution by mixing 30 mL of vinegar with 70 mL of water. This is solution B.

5. Prepare a 10 percent vinegar solution by mixing 30 mL of vinegar with 270 mL of water. This is solution C.

6. Pour the vinegar solutions into their associated 0.5-L plastic bottles labeled A, B, and C.

7. Mark a small test tube about 1–2 cm from its bottom. Fill the test tube to the line with baking soda. Pour the baking soda into one balloon.

8. Repeat step 7 with two more balloons. Be sure the amount of baking soda in each balloon is the same.

9. Place the mouth of one balloon over the mouth of one 0.5-L bottle. Do not let any of baking soda fall into the vinegar solution.

10. Repeat step 9 with the other two balloons and the remaining bottles.

Inquiry Lab

11. Lift each balloon to allow the baking soda to fall into each vinegar solution. Time how long it takes for the reaction to finish. Measure how much each balloon inflates. Record your observations in your Concentration data table.

12. Carefully remove the balloons from the bottles.

13. Rinse the plastic bottles with water.

14. Prepare a 30 percent vinegar solution by mixing

30 mL of vinegar with 70 mL of cold water.

15. Prepare two more similar solutions with room-temperature water and hot water.

16. Place the three solutions in the three 0.5-L plastic bottles.
17. Repeat steps 7 and 8 to refill the balloons with baking soda.

18. Place the balloons back on the bottles, repeating steps 9 and 10.

19. Repeat step 11. Time how long it takes for the reaction to finish.

20. Measure how much each balloon inflates. Record your observations in your Temperature data table.

Concentration Data Table (Ballon circumferrence)

Temperature Data Table (Circumferrence of ballon)

Analyze Your Data

1. Describe how increasing the concentration of a solution affects the rate of a chemical reaction. (Concentration increases rate increases)

2. Summarize how temperature affects the rate of a chemical reaction.(Temperature increases rate increases)

3. Explain why the balloons become inflated.( Because of Co2)

Conclude and Apply

4. Infer why the vinegar solutions in steps 3, 4, and 5 were different volumes. Why couldn’t the volumes be the same?

5. Predict what factors might affect the amount of product that is produced. What factors affect the rate at which products are produced?

Buckeye Department Stores, Inc. operates a chain of department stores in Ohio. The company’s organization chart appears below. Operating data for 20x1 follow.

The following fixed expenses are controllable at the divisional level: depreciation—furnishings, computing and billing, warehouse, insurance, and security. In addition to these expenses, each division annually incurs $60,000 of computing costs, which are not allocated to individual stores.

The following fixed expenses are controllable only at the company level: depreciation—building, property taxes, and supervisory salaries. In addition to these expenses, each division incurs costs for supervisory salaries of $110,000, which are not allocated to individual stores.

Buckeye Department Stores incurs common fixed expenses of $130,000, which are not allocated to the two divisions. Income-tax expense for 20x1 is $2,050,000.

Required:

1. Prepare a segmented income statement for Buckeye Department Stores, Inc. Please fill in the chart I provided below, thank you!

Prepare a segmented income statement for Buckeye Department Stores, Inc. (Enter your answers in thousands.)

Write a complete Java program to create three types of counters as follows:

1. The first counter increases its value by one.
2. The second counter increases its value by two.
3. The third counter increases its value by three.

Please follow these notes:

1. Create one class for all counter types. The name of the class is Three_type_counter.
2. Define a constructor method that initial values for all counters to 7 when the class object created.
3. Create method for each counter as: count1, count2 and count3. Each method has to increase each counter value by one, two and three respectively.
4. In the main program:
   1. Create new object with name “obj_counter”.
   2. Call the three methods for each counter at one time.
   3. Print out the values for all counters.(support your answer by screenshot)

Suppose that a pharmaceutical company makes the assertion that Drug A has a stronger effect than Drug B. To test this claim, 1000 randomly selected people were given the two drugs during different treatment periods. Among them, 600 preferred taking Drug A because of the stronger effect they felt; whereas 400 preferred Drug B. Determine whether there is sufficient evidence, at the 5% level of significance, to support the company’s claim that Drug A is stronger and preferred by more than 50% of patients.

Select one:

a. Reject H₀; Drug A is stronger and preferred by less than 50% of patients.

b. Reject H₀; Drug A is stronger and preferred by more than 50% of patients.

c. Do not reject H₀; Drug A is stronger and preferred by less than 50% of patients.

d. Do not reject H₀; Drug A is stronger and preferred by more than 50% of patients.

A medical study, a doctor is interested in determining what factors affect forced expired volume values (FEV). The doctor randomly samples 15 patients and records their smoking status and age. Using the data, create the regression output (including the y-intercept and both independent variables) then answer the questions below. Note that smoking status and age are recorded as categorical variables.

• Write out the estimated regression line. To receive full credit, you must label all variables/categories.

• Run an overall F-test to determine if the multiple regression model is significant at a 5% significance level. To receive full credit, you must give me:

• Predict the FEV value for a smoker over 50 years old.

• Estimate the average FEV for non-smokers between 30-40 years old.

The company with the common equity accounts shown here has decided on a two-for-one stock split. The firm’s 37-cent-per-share cash dividend on the new (postsplit) shares represents an increase of 15 percent over last year’s dividend on the presplit stock.

Common stock ($1 par value) $ 470,000

Capital surplus 1,555,000

Retained earnings 3,878,000

Total owners’ equity $ 5,903,000

a. What is the new par value of the stock? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

New par value $______ per share

b. What was last year’s dividend per share? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

Dividends per share last year $_________

1) Edgar, a manager from Human Resources, thinks the problem stems from night-shift workers not getting proper sleep and consequently inducing errors. He thinks that less than 50% of workers on the night shift are getting at least the seven hours of sleep necessary to perform adequately. HR surveys 80 night-shift workers and finds that 46 of them claim to get at least seven hours of sleep per night. At 95% confidence, can we reject Edgar’s claim? Please use the critical-value method to test this, stating the null and alternative hypotheses as well as the test statistic you will use.

- Lisa, another HR manager, thinks that the problems have nothing to do with the night shift, so she wants to prove to Edgar that the proportion of day-shift workers getting adequate sleep and night-shift workers getting adequate sleep is the same. She interviews 50 day-shift workers and finds that 31 claim to get at least seven hours of sleep per night. Using the surveys for night-shift workers from problem 2, can we say that Lisa is wrong with 95% confidence? In your answer, please use the critical-value method, stating the null and alternative hypotheses as well as the test statistic you will use.