Maurice Tutor

(5)

$15/per page/Negotiable

About Maurice Tutor

Levels Tought:
Elementary,Middle School,High School,College,University,PHD

Expertise:
Algebra,Applied Sciences See all
Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 406 Weeks Ago, 3 Days Ago
Questions Answered: 66690
Tutorials Posted: 66688

Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 19 Sep 2017 My Price 9.00

Foreign Revenue

Large U.S. Companies: Foreign Revenue For large U.S. companies, what percentage of their total income comes from foreign sales? A random sample of technology companies (IBM, Hewlett-Packard, Intel, and others) gave the following information.

Technology companies, % foreign revenue: x1 ;n1 = 16

62.8

55.7

47.0

59.6

55.3

41.0

65.1

51.1

53.4

50.8

48.5

44.6

49.4

61.2

39.3

41.8

Another independent random sample of basic consumer product companies (Goodyear, Sarah Lee, H.J. Heinz, Toys “ ” Us) gave the following information.

Basic consumer product companies, % foreign revenue: x2; n2 = 17

28.0

30.5

34.2

50.3

11.1

28.8

40.0

44.9

40.7

60.1

23.1

21.3

42.8

18.0

36.9

28.0

32.5

 

 

 

 

 

 

 

Assume that the distributions of percentage foreign revenue are mound-shaped and symmetric for these two company types.

(a) Use a calculator with mean and standard deviation keys to verify that  width=, and s2≈ 12.26.

(b) Let μ1 be the population mean for x1and let μ2be the population mean for x2. Find an 85% confidence interval for μ1- μ2

(c) Interpretation Examine the confidence interval and explain what it means in the context of this problem. Does the interval consist of numbers that are all positive? all negative? of different signs? At the 85% level of confidence, do technology companies have a greater percentage foreign revenue than basic consumer product companies?

(d) Check Requirements Which distribution (standard normal or Student’s t) did you use? Why?

Answers

Maurice Tutor
(5)
Status NEW Posted 19 Sep 2017 09:09 AM My Price 9.00

Hel-----------lo -----------Sir-----------/Ma-----------dam-----------Tha-----------nk -----------You----------- fo-----------r u-----------sin-----------g o-----------ur -----------web-----------sit-----------e a-----------nd -----------and----------- ac-----------qui-----------sit-----------ion----------- of----------- my----------- po-----------ste-----------d s-----------olu-----------tio-----------n.P-----------lea-----------se -----------pin-----------g m-----------e o-----------n c-----------hat----------- I -----------am -----------onl-----------ine----------- or----------- in-----------box----------- me----------- a -----------mes-----------sag-----------e I----------- wi-----------ll

Not Rated(0)