Questions
Identifying individuals with a high risk of Alzheimer’s disease usually involves a long series of cognitive...

Identifying individuals with a high risk of Alzheimer’s disease usually involves a long series of cognitive tests. Researchers have developed a shorter test called the 7-Minute Screen. A study using the same participants evaluated whether scores from the 7-Minute Screen could predict scores from a series of cognitive tests for Alzheimer’s disease.

Participant 7-minute Screen Cognitive Series
1 3 11
2 8 19
3 10 22
4 8 20
5 4 14
6 7 13
7 4 9
8 5 20
9 14 25

a.Sketch a scatterplot of the test scores. Make sure to label both axes.










b. Calculate the Pearson correlation to measure the linear relationship between the two test scores.











c. What percentage of variance in cognitive test scores is predicted from the 7-Minute Screen scores?




d.Find the regression equation for predicting the cognitive test scores from the 7-Minute Screen score.












e. Evaluate the significance of the regression equation at alpha 0.05. State the conclusion in the words of the problem.














f. Can the regression equation found in (d) be used to predict cognitive test scores if the 7-Minute Screen scores are 6 and 25? Either predict the cognitive test score or explain why the regression equation cannot be used.

7-Minute Screen score = 6, Cognitive test score =




7-Minute Screen score = 25, Cognitive test score =

In: Statistics and Probability

Cologne Formulations Cologne Formulation %w Alcohol %w Essential oil %w Water C-1 60.0 3.0 37.00 C-2...

Cologne Formulations

Cologne

Formulation

%w Alcohol

%w Essential oil

%w Water

C-1

60.0

3.0

37.00

C-2

40.0

3.0

57.00

C-3

60.0

5.0

35.00

Using this table we are required doing three cologne with equal amount of 50 g ,evaluate the fragrance, persistence and the effect on the skin and fabric of the cologne. If we divided each cologne into two and store one on the refrigerator and one at room temperature. which one will better in terms of fragrance, presistense and the effect on the skin and fabric of the cologne. explain why?

In: Chemistry

Romello Accounting LLP is a small CPA firm consisting of three partners and seven other professional...

Romello Accounting LLP is a small CPA firm consisting of three partners and seven other professional staff. The firm offers full attestation and assurance services. Most of the work is for small and medium-sized nonpublic companies. The firm is registered with the PCAOB and does audits of about 30 penny stock or pink sheet companies and broker-dealers each year.

Tony Romello, the managing partner of the firm, has been the review partner on all audits for the last several years. Unfortunately, Tony encountered major health concerns in the last month and will not be available for the upcoming busy season. Michelle Thompson and Max King, the two remaining partners, are discussing staffing during the busy season.

“I am sorry that Tony is so ill, but I am concerned about our staff needs over the next three months. With two senior auditors and five staff auditors, we are all going to be very busy. I guess it is too late to hire experienced staff and get them trained quickly,” Michelle stated.

“Don’t forget that we will need a review partner,” Max mused. “Hey, I could be the review partner for your audits and you can be review partner on my audits.”

“I almost forgot that,” Michelle said. “But don’t we need to get a review partner who hasn’t worked on the audits the last two years? That would exclude both of us, since we are switching off audits every five years. . . . Hey, maybe we can get Tom Mullins, CPA, to be our review partner on a contract basis?”

Max immediately objected. “You know that, as a retired Big Four audit partner, he would eat up our slim profits with his contract rate. Let’s just make do this year and start planning to have a new partner by this time next year.”

“We can’t do that,” Michelle countered. “When we have the PCAOB inspections, we will get penalized. We would also be cited in our peer reviews. No, no, I’m not comfortable thinking of not having a review partner. Also, without Tony this year, you and I will be busy supervising the staff without the added responsibilities of being review partner.”

“Oh brother, you are such a rule follower!”

In a thorough response, identify the stakeholders of audits and their interests. Is there a difference between stakeholders and interests of public versus nonpublic companies?

In: Accounting

(1) Read in the data and create an R data frame named tennis.dfr that has the...

(1) Read in the data and create an R data frame named tennis.dfr 
that has the following names for its columns:  first.name, last.name,
major.match.wins, major.match.losses, overall.match.wins, 
overall.match.losses, major.titles, overall.titles.  (Note that the 
data file has several explanatory lines before the real data begin 
that should be skipped when reading in the data lines.)
NOTE:  For the file name, you must use the following web address (URL): 
"http://people.stat.sc.edu/hitchcock/tennisplayers2018.txt".  
Please do not have your code read in the file from your own personal directory.

(2) Create and add two more columns called major.winning.pct and 
overall.winning.pct (showing winning percentage in the "major" and 
"overall" categories, respectively) to this data frame.
  
Note that "winning percentage" is defined 
as (match wins)/(match wins + match losses).

(3) Sort the data frame by major titles, from most to least.  
Have your program print the sorted data frame.

(4) Perform a nested sort, sorting the data frame first by major
titles (from most to least), and then by major winning percentage 
(from most to least) within major-title levels.
Have your program print this sorted data frame.

(5) Have R extract the subset of the data frame consisting of players
with at least 6 major titles.  Call this new data frame: greatest.dfr
Have your program print this new data frame.

(6)  In the most efficient way possible, have R calculate the sample means 
for each of the numeric variables in the tennis.dfr data set.
(Hint: Extract the appropriate subset of the data frame first.)

(7) Use the write.table() function to write the data set tennis.dfr to an
external file simply called "tennisdata.txt".  Make sure the external file includes the column names.
Also, make sure the players' names are NOT surrounded by quotes in the 
external file.

In: Statistics and Probability

The earnings, dividends, and common stock price of Shelby Inc. are expected to grow at 3%...

The earnings, dividends, and common stock price of Shelby Inc. are expected to grow at 3% per year in the future. Shelby's common stock sells for $21.00 per share, its last dividend was $2.00, and the company will pay a dividend of $2.06 at the end of the current year.

Using the discounted cash flow approach, what is its cost of equity? Round your answer to two decimal places.
%.......

If the firm's beta is 2.1, the risk-free rate is 8%, and the expected return on the market is 14%, then what would be the firm's cost of equity based on the CAPM approach? Round your answer to two decimal places.
%......

If the firm's bonds earn a return of 12%, and analysts estimate the market risk premium is 3 to 5 percent, then what would be your estimate of rsusing the over-own-bond-yield-plus-judgmental-risk-premium approach? Round your answer to two decimal places. (Hint: Use the midpoint of the risk premium range).
%.......

On the basis of the results of parts a through c, what would be your estimate of Shelby's cost of equity? Assume Shelby values each approach equally. Round your answer to two decimal places.
%......

In: Finance

Orange Corp. has two divisions: Fruit and Flower. The following information for the past year is...

Orange Corp. has two divisions: Fruit and Flower. The following information for the past year is available for each division:

Fruit Division Flower Division
Sales revenue $ 1,440,000 $ 2,160,000
Cost of goods sold and operating expenses 1,080,000 1,620,000
Net operating income $ 360,000 $ 540,000
Average invested assets $ 3,000,000 $ 2,160,000

   

Orange has established a hurdle rate of 8 percent.   

Required:
1-a. Compute each division’s return on investment (ROI) and residual income for last year. (Enter your ROI answers as a percentage rounded to two decimal places, (i.e., 0.1234 should be entered as 12.34%.))

         

1-b. Determine which manager seems to be performing better.

        

Fruit Division
Flower Division

   

2. Suppose Orange is investing in new technology that will increase each division’s operating income by $146,000. The total investment required is $2,300,000, which will be split evenly between the two divisions. Calculate the ROI and return on investment for each division after the investment is made. (Enter your ROI answers as a percentage rounded to two decimal places, (i.e., 0.1234 should be entered as 12.34%.))

       

3. Which manager will accept the investment.

    


In: Accounting

The future earnings, dividends, and common stock price of Callahan Technologies Inc. are expected to grow...

The future earnings, dividends, and common stock price of Callahan Technologies Inc. are expected to grow 8% per year. Callahan's common stock currently sells for $29.50 per share; its last dividend was $1.50; and it will pay a $1.62 dividend at the end of the current year.

  1. Using the DCF approach, what is its cost of common equity? Round your answer to two decimal places. Do not round your intermediate calculations.
    %

  2. If the firm's beta is 1.10, the risk-free rate is 6%, and the average return on the market is 12%, what will be the firm's cost of common equity using the CAPM approach? Round your answer to two decimal places.
    %

  3. If the firm's bonds earn a return of 9%, based on the bond-yield-plus-risk-premium approach, what will be rs? Use the midpoint of the risk premium range discussed in Section 10-5 in your calculations. Round your answer to two decimal places.
    %

  4. If you have equal confidence in the inputs used for the three approaches, what is your estimate of Callahan's cost of common equity? Round your answer to two decimal places. Do not round your intermediate calculations.
    %

In: Finance

The Patricia Garcia Company Is Currently Producing Seven New Medical Products. Each Of Garcia's ... Question:...

The Patricia Garcia Company Is Currently Producing Seven New Medical Products. Each Of Garcia's ... Question: The Patricia Garcia company is currently producing seven new medical products. Each of Garcia's e... The Patricia Garcia company is currently producing seven new medical products. Each of Garcia's eight plants can add one more product to its current line of medical devices. The unit manufacturing costs for producing the different parts at the eight plants are shown below. How should Garcia assign the new products to the plants in order to minimize manufacturing costs? I need a step by step example*** use linear programming manually not excel

P1 P2 P3 P4 P5 P6 P7 P8
C53 .1 .12 .13 .11 .1 .06 .16 .12
C81 .05 .06 .04 .08 .04 .09 .06 .06
D5 .32 .4 .31 .3 .42 .35 .36 .49
D44 .17 .14 .19 .15 .1 .16 .19 .12
E2 .06 .07 .1 .05 .08 .1 .11 .05
E35 .08 .1 .12 .08 .09 .1 .09 .06
G99 .55 .62 .61 .7 .62 .63 .65 .59

In: Advanced Math

Refer to the table. The economy shown is a:

Real GDP

Consumption (after taxes)

Gross Investment

Net Exports

Government Purchases

$0

-$20

$10

$+5

$15

10

0

10

+5

15

40

20

10

+5

15

70

40

10

+5

15

100

60

10

+5

15

130

80

10

+5

15

160

100

10

+5

15

Refer to the table. The economy shown is a:

a. Private economy.

b. private open economy.

c. mixed closed economy.

d. mixed open economy.


In: Economics

RTY Company’s year-end balance sheet for 2018 and forecasted quarterly cash flows for 2019 are given...

RTY Company’s year-end balance sheet for 2018 and forecasted quarterly cash flows for 2019 are given below. Company always pays for its purchases one quarter after the purchase. 50% of all sales are collected in the current quarter and 50% in the next quarter. Other expenses are paid in the current quarter. a. Prepare the quarterly cash budget for the company for 2019. b. Assuming all forecasts will be accurate, how much external long-term financing will the company need if the company does not want to use any short-term financing at all?

Balance Sheet Year-end 2018 (million$) Assets Liablities Cash 5 Accounts Payable 40 Accounts Receivable 25 Inventory 70 Long-term Debt 160 Net Fixed Assets 400 Equity 300 Total Assets 500 Total Liabilities and Equity 500 2019 Forecasts (million $) Quarter 1 Quarter 2 Quarter 3 Quarter 4 Sales 50 20 120 30 Purchases 40 30 50 50 Other expenses 10 10 10 10

In: Finance