Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Will improving customer service result in higher stock prices for the companies providing the better service? When a companys satisfaction score has improved over the prior years results and is above the national average (currently 75.7), studies show its shares have a good chance of outperforming the broad stock market in the long run (Business- Week, March 2, 2009). The following satisfaction scores of three companies for the 4th quarters of 2007 and 2008 were obtained from the American Customer Satisfaction Index. Assume that the scores are based on a poll of 60 customers from each company. Because the polling has been done for several years, the standard deviation can be assumed to equal 6 points in each case.
Company 2007 Score 2008 ScoreRite Aid 73 76Expedia 75 77J.C. Penney 77 78
a. For Rite Aid, is the increase in the satisfaction score from 2007 to 2008 statistically significant?Use ? ? = :05. What can you conclude?
b. Can you conclude that the 2008 score for Rite Aid is above the national average of 75.7? Use ? ? = :05.
c. For Expedia, is the increase from 2007 to 2008 statistically significant? Use ? = :05.
d. When conducting a hypothesis test with the values given for the standard deviation, sample size, and ?, how large must the increase from 2007 to 2008 be for it to be statistically significant?
e. Use the result of part (d) to state whether the increase for J.C. Penney from 2007 to 2008 is statistically significant.
Solution of the following question The Nigerian president goodluck jonathan has just returned from Germany and the following economic transactions were obtained thus,use the data t
The market for quits is initially competitive and the market demand is: P=400-0.4QD. The Combined marginal costs of the firms in the quit industry are: MC=50+0.6Q. a. Draw the
How credit is created or the creation of credit
The quantity of coffee demanded, QD, depends on the price of coffee, Pc, and the price of tea, PT. The quantity of coffee supplied, QS, depends on the price of coffee, Pc, and the
COMBINED ISLM MODEL
If a government finances an increase in its expenditures by selling bonds to the public, then the aggregate demand curve will: A. not shift. B. shift out more if crowding out occur
This problem is based on the Ricardian Model. Assume that 2 countries, Stormlands and Reach, use White Walkers' labor to produce 2 goods, lumber and wheat.
Positive and normative economics -introductiion Economic theory or analysis evolves from basic propositions about how individual human beings (or individual economic units) beh
WHAT IT MEAN
On the day his son was born, a father decided to establish a fund for his son's college education. The father wants the son to be able to withdraw $4000 from the fund on his 18th b
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd