Alpha Geek

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Category > Accounting Posted 19 May 2017 My Price 5.00

In 2008, a small dealership leased 21 Suburu Outbacks on 2-year leases

9.34      In 2008, a small dealership leased 21 Suburu Outbacks on 2-year leases. When the cars were returned in 2010, the mileage was recorded (see below). Is the dealer’s mean significantly greater than the national average of 30,000 miles for 2-year leased vehicles, using the 10 percent level of significance? Mileage

 

40,060

24,960

14,310

17,370

44,740

44,550

20,250

33,380

24,270

41,740

58,630

35,830

25,750

28,910

25,090

43,380

23,940

43,510

53,680

31,810

36,780

9.35      At Oxnard University, a sample of 18 senior accounting majors showed a mean cumulative GPA of 3.35 with a standard deviation of 0.25. (a) At α = .05 in a two-tailed test, does this differ significantly from 3.25 (the mean GPA for all business school seniors at the university)? (b) Use the sample to construct a 95 percent confidence interval for the mean. Does the confidence inter- val include 3.25? (c) Explain how the hypothesis test and confidence interval are equivalent.

Answers

Alpha Geek
(8)
Status NEW Posted 19 May 2017 02:05 PM My Price 5.00

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Attachments

file 1495204323-Answer.docx preview (177 words )
9-----------.34----------- Â----------- Â ----------- Â----------- Â -----------In -----------200-----------8, -----------a s-----------mal-----------l d-----------eal-----------ers-----------hip----------- le-----------ase-----------d 2-----------1 S-----------ubu-----------ru -----------Out-----------bac-----------ks -----------on -----------2-y-----------ear----------- le-----------ase-----------s. -----------Whe-----------n t-----------he -----------car-----------s w-----------ere----------- re-----------tur-----------ned----------- in----------- 20-----------10,----------- th-----------e m-----------ile-----------age----------- wa-----------s r-----------eco-----------rde-----------d (-----------see----------- be-----------low-----------). -----------Is -----------the----------- de-----------ale-----------râ€-----------™s -----------mea-----------n s-----------ign-----------ifi-----------can-----------tly----------- gr-----------eat-----------er -----------tha-----------n t-----------he -----------nat-----------ion-----------al -----------ave-----------rag-----------e o-----------f 3-----------0,0-----------00 -----------mil-----------es -----------for----------- 2------------yea-----------r l-----------eas-----------ed -----------veh-----------icl-----------es,----------- us-----------ing----------- th-----------e 1-----------0 p-----------erc-----------ent----------- le-----------vel----------- of----------- si-----------gni-----------fic-----------anc-----------e?Â----------- Mi-----------lea-----------ge -----------  ----------- 4-----------0,0-----------60 -----------24,-----------960----------- 14-----------,31-----------0 1-----------7,3-----------70 -----------44,-----------740----------- 44-----------,55-----------0 2-----------0,2-----------50 ----------- 33-----------,38-----------0 2-----------4,2-----------70 -----------41,-----------740----------- 58-----------,63-----------0 3-----------5,8-----------30 -----------25,-----------750-----------
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