For Exercise 1 through 7, do a complete regression analysis by performing the following steps.

a.Draw the scatter plot.

b.Compute the value of the correlation coefficient.

c.Test the significance of the correlation coefficient at α = 0.01, using Table I or use the P-value method.

d.Determine the regression line equation if r is significant.

e.Plot the regression line on the scatter plot, if appropriate.

f.Predict y′ for a specific value of x, if appropriate.

Sections 10–1 and 10–2

1.Customer Satisfaction and Purchases At a large department store customers were asked to rate the service and the materials purchased on a scale from 1 to 10, with 10 being the highest rating. Then the amount that they spent was recorded. Is there evidence of a relationship between the rating and the amount that they spent? Please do by hand and show work

Rating x	6	8	2	9	1	5
Amount spent y	$90	$83	$42	$110	$27	$31

Answer: 1.H₀: ρ = 0; H₁: ρ ≠ 0; r = 0.864; C.V. = ±0.917; d.f. = 4; do not reject. There is not a significant linear relationship between the rating and the amount that they spent. No regression analysis should be done. P = 0.0263

(Operations Management) The grocery store gets an average of 50 customers per shift. The manager wants to calculate whether he should hire one, two, three, or four salespeople. The average waiting times will be seven minutes with one salesperson, four minutes with two salespeople, three minutes with three salespeople, and two minutes with four salespeople. He has estimated the cost per minute that customers wait at $1. The cost per salesperson per shift (including fringe benefits) is $70. Analyze to determine how many salespeople should be hired?

It’s one thing to have customers that are loyal like the spa customer is expected to be. It’s another thing to develop loyal AND profitable customers. Both customer attributes are essential if you are to run a successful firm.

Assume you have four products and three customers. You can see that both products and customers range from highly profitable to unprofitable. When you know which customers are most profitable and what they buy, you can segment them according to profitability to the firm. What implications does this have for the amount of service provided?

8. (18 pts) A study wants to know whether there is a difference in objection to sharing information among the three groups of customers: customers of insurance companies, customers of pharmacies and customers of medical researchers. A sample of customers is selected for each group and the results are as follows: Organizational Grouping Object to Sharing Information Insurance Pharmacies Research Total Yes 40 80 90 210 No 160 120 110 390 Total 200 200 200 600 At the α = 0.025 level of significance, is there evidence of difference in objection to sharing information among the organizational groupings?

Question 1

You currently have $7,500 to invest. You can invest the full amount now for a period of 9 years at which time you want to have $15,000. Approximately what rate of return is needed to accomplish this investment goal?

8.01%

7.59%

9.65%

8.50%

Question 2

If four years of college tuition cost $15,000 in 1990, what did it cost in 1965 if tuition increased at 7% per year between 1965 and 1990?

$2,764

$1,405

$3,876

$8,141

Question 3

You have the choice of receiving $15,000 today or $25,000 in six years as a down payment from someone who wants to purchase your rental property. If you could expect to earn 11 percent on invested money (i.e. your time value of money = 11%), which would you choose?

I would choose $15,000 today

I would choose $25,000 in six years

I would choose neither

Question 4

Five years from now, you would like to have $25,000 for a down payment on a home. Assuming you could earn 9% interest, how much money would you need to invest today as a lump sum to meet your goal?

$16,248

$4,177

$3,826

$11,739

Question 5

What would you be willing to pay (on January 1, 2006) for an investment which you could sell on January 1, 2036 for $45,000? Assume that the interest rate between 2006 and 2036 will be 9% annually.

$3,392

$5,219

$4,932

$6,718

A 2012 New York Times article noted the growing national trend of gated communities: Across the United States, more than 10 million housing units are in gated communities, where access is “secured with walls or fences,” according to 2009 Census Bureau data. Roughly 10 percent of the occupied homes in this country are in gated communities... Between 2001 and 2009, the United States saw a 53 percent growth in occupied housing units nestled in gated communities. Over the past thirty years, residential income segregation has also increased, with more upper-income households located in majority upper-income neighborhoods. Drawing on Kendall’s (2006) study about elite practices of boundary maintenance, explain how residential segregation contributes to class-based inequality.A 2012 New York Times article noted the growing national trend of gated communities: Across the United States, more than 10 million housing units are in gated communities, where access is “secured with walls or fences,” according to 2009 Census Bureau data. Roughly 10 percent of the occupied homes in this country are in gated communities... Between 2001 and 2009, the United States saw a 53 percent growth in occupied housing units nestled in gated communities. Over the past thirty years, residential income segregation has also increased, with more upper-income households located in majority upper-income neighborhoods. Drawing on Kendall’s (2006) study about elite practices of boundary maintenance, explain how residential segregation contributes to class-based inequality.

These questions are about the Nicaraguan Sign Language Senghas (2004) article.

1.) What is the theoretical postion on the Nicaraguan Sign Language?

2.) What are the 2 properties of language focused on in the Senghas (2004) article? Can you explain what each of them are and why they are important?

3.) How many NSL signers were studied in each of the 3 cohorts that were sampled

a.)How did their linguistic environments differ?

b.)How did their signs differ?

4.)What do you think NSL helps us understand about language development?

Consider the market for health insurance. Suppose there are three people. Healthy Hal, Average Al,
and Portly Pete. All three of these people will buy health insurance if it costs less than or equal to his
actuarily fair insurance rate. Hal's true cost to insure is $5,000, Al's true cost to insure is $10,000, and
Pete's true cost is $15,000.
a) Suppose the insurance company must offer a single policy to all customers, and it tries to be fair by
averaging the costs of its three customers. What premium will it charge? Who will choose to buy
insurance at that price?
b) Observing who has actually purchased a policy, the insurance company decides to adjust its
premium to be the average cost of the observed customers in part (a). What premium will it charge?
Which customers will buy insurance at this price?
c) Once again, the insurance company observes who actually purchased insurance, and decides to
adjust its premium to the average cost of its observed customers in part (b). What premium will
charge? Which customers will buy insurance at this price? Is this market efficient? If not, suggest
some mechanism that might improve its efficiency.

For part (a), 1/3(5000+10000+15000)=10000? Al and Pete will buy
For part (b), 1/2(10000+15000)=125000; Pete will buy. The market is not efficient.
For part (c), 15000; Pete will buy
Am I right for the answers? And what will be the mechanisms to improve the market?
Thanks.

Choose a company. Use that company's operations to give three (3) examples of possible accounts receivable customers, and three (3) examples of possible makers of notes receivables in that company.

QUESTION 23

Beta-lactam, isoniazid, and vancomycin antibiotics all work by inhibiting cell wall synthesis.

True

False

QUESTION 24

Penicillin is a beta-lactam antibiotic often successfully used to treat Gram negative infections.

True

False

QUESTION 27

An oxidoreductase enables the transfer of electrons or hydrogen atoms from one molecule to another.

True

False

QUESTION 30

Which of the following is an INCORRECT pairing?

	A.	algae : unicellular or multicellular
	B.	viruses : acellular
	C.	protozoa : multicellular
	D.	fungi : unicellular or multicellular
	E.	bacteria : unicellular

QUESTION 31

Which of the following would contribute to the successful application of Koch's postulates?

	A.	The theory of abiogenesis.
	B.	The ability to grow pure cultures of bacteria.
	C.	The ability to record the appearance of bacteria photographically.
	D.	Knowledge of carcinogenic agents.
	E.	The field of biochemistry.