Suppose the average size of a new house built in a certain county in 2006 was 2,273 square feet. A random sample of 30 new homes built in this county was selected in 2010. The average square footage was 2,185 with a sample standard deviation of 229 square feet.
|
a. |
Using
α equals=0.10 does this sample provide enough evidence to conclude that the average house size of a new home in the county has changed since 2006? |
|
b. |
Use technology to determine the p-value for this test. |
a. Determine the null and alternative hypotheses. Choose the correct answer below.
A.
H0: μ=2,273 and H1:μ≠2,273
B.
H0: μ≥2,273 and H1: μ<2,273
C.
H0: μ=2,273 and H1: μ>2,273
D.
H0: μ≠2,273 and H1: μ=2,273
Determine the critical value(s).
The critical value(s) is(are) ____
(Round to three decimal places as needed. Use a comma to separate answers as needed.)
Determine the test statistic,
t Subscript x overbartx.
t Subscript x overbartx = _____
(Round to two decimal places as needed.)
What conclusion should be drawn? Choose the correct answer below.
A. Reject the null hypothesis. The data do not provide sufficient evidence to conclude that the average house size has changed since 2006.
B. Do not reject the null hypothesis. The data do not provide sufficient evidence to conclude that the average house size has changed since 2006.
C. Do not reject the null hypothesis. The data provide sufficient evidence to conclude that the average house size has changed since 2006.
D. Reject the null hypothesis. The data provide sufficient evidence to conclude that the average house size has changed since 2006.
b. Use technology to determine the p-value for this test. What is the p-value?
p-value = _____
(Round to three decimal places as needed.)
In: Statistics and Probability
Based on your review of Rosseau (2006), discuss three critical issues that you are taking away from the article. What role do you see the concept of evidence-based management playing in strategic management?
In: Economics
Consider the portfolio of projects described in the table. The resource requirements are in numbers of labor hours. The Greatest Resource Utilization rule would begin work with project:
| Project | Date Rec'd | Date Due | Resource 1 | Resource 2 | Resource 3 |
| A | Apr 2006 | Oct 2006 | 200 | 0 | 400 |
| B | Feb 2006 | Sep 2006 | 150 | 200 | 170 |
| C | Mar 2006 | Aug 2006 | 0 | 250 | 200 |
| D | Jan 2006 | Nov 2006 | 150 | 100 | 0 |
Options:
A.
B.
C.
D.
In: Operations Management
Table below shows the demand for haircuts from seniors and other customers on an average weekday in the local hairdressing shop.
| Price of Haircut | Quantity Demanded by Seniors | Quantity Demanded by Other Customers |
| $24 | 1 | 9 |
| 22 | 4 | 10 |
| 20 | 7 | 11 |
| 18 | 10 | 12 |
| 16 | 13 | 13 |
| 14 | 16 | 14 |
| 12 | 19 | 15 |
| 10 | 22 | 16 |
| 8 | 25 | 17 |
| 6 | 28 | 18 |
a) Between the prices of $20 and $24, which of the two demands is more elastic? Round your answers to 2 decimal places.
The price elasticity of demand for seniors is
The price elasticity of demand for other customers is
The elasticity of demand is greater for (Click to select) seniors other customers
b) What price would give the shop the greatest sales revenue?
In: Economics
In: Statistics and Probability
Pricing Strategy, Sales Variances
Eastman, Inc., manufactures and sells three products: R, S, and T. In January, Eastman, Inc., budgeted sales of the following.
| Budgeted Volume |
Budgeted Price |
|
|---|---|---|
| Product R | 111,300 | $29 |
| Product S | 145,100 | 23 |
| Product T | 16,200 | 19 |
At the end of the year, actual sales revenue for Product R and Product S was $3,069,900 and $3,480,400, respectively. The actual price charged for Product R was $27 and for Product S was $22. Only $8 was charged for Product T to encourage more consumers to buy it, and actual sales revenue equaled $343,200 for this product.
Required:
1. Calculate the sales price and sales volume variances for each of the three products based on the original budget.
| Sales price variance | Sales volume variance | |||
| Product R | $ | Unfavorable | $ | Favorable |
| Product S | $ | Unfavorable | $ | Favorable |
| Product T | $ | Unfavorable | $ | Favorable |
In: Accounting
A certain forum reported that in a survey of 2004 American adults, 28% said they believed in astrology.
(a) Calculate a confidence interval at the 99% confidence level for the proportion of all adult Americans who believe in astrology. (Round your answers to three decimal places.) ,
In: Statistics and Probability
Problem 2: Theory
a. What are the factors that contribute to gaussian lineshape broadening in spectroscopy?
b. Is it possible to do XRD of a gold sample with a carbon Mα radiation?
c. What is the probing depth of a common lab XPS?
d. Write down the basic equation for photoemission from a solid, and explain the meaning of the terms.
e. What are the main differences between SEM and TEM? Enumerate at least three.
f. What is a fractal and why we can obtain fractal structures in the flame synthesis?
In: Other
A fast-food restaurant has identified three primary groups willing to purchase its meals. However, customers are willing to purchase only one meal each. The table shows the total number of meals bought at three different prices. The number of consumers is the total number of buyers at each price level.
| Group | Number of consumers | Willingness to pay |
|---|---|---|
| High | 350 | $5 |
| Medium | 500 | $4 |
| Low | 750 | $2 |
The restaurant can produce a meal with no fixed costs and a
constant marginal cost of $1 per unit.
1st attempt
Part 1 (2 points)
If the restaurant charges only one price for the meal, it will charge $--- and receive a profit of $ -----.
Part 2 (2 points)
Assume the firm can distinguish between customers and has the ability to charge different customers different prices. If the restaurant can perfectly price-discriminate, the highest price it will charge is $ ----- . The total profits under perfect price discrimination are $ ----- .
Part 3 (2 points)
Assume the firm can distinguish between customers and has the ability to charge different customers different prices. If the restaurant charges two prices, it will charge $-----and $-------.
and receive a profit of $-------.
In: Economics
1. What is branding for? Give an example to clarify your answer and explain.
What’s private brand? What’s the purpose(s) of private brand.
2. Explain the primary difference between a wholesaler and sales agent. Who has more active
roles in finding customers and customers’ wants?
3. Let’s say, after 15% increase in selling price, a burger shop found 5% drop in number of sales of burger. Is the demand for burger sensitive to changes in price this case? What do you recommend to keep or increase sales revenue?
In: Operations Management