Quiz+_18 - MGT 2250 -- Quiz #18 2 Sides A a Answers: my?“...

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Unformatted text preview: MGT 2250 -- Quiz #18 2 Sides A a Answers: my?“ s/< k s 1) A simple random sample of 40 items resulted in a sample mean of 32. Assume a population standard deviation of 8. a) Using a 95% confidence level, how large a sample should be used to provide a margin of error of 1.5? M “xx,Q L i _ ‘ a? p ‘ [gig for“ W’ém a a, ? (orig?) ? we » fl iii”; if? J b) Using a 90% confidence level, how large a sampie should be used to provide a margin of error of 1.5? \ i ' ' r ,/ \ /( filigiWQl'ffl i. E Mfg) {,E we \2 W , . \ a?" f "‘ ' W ‘7): ’g‘ in a i “ii-"Mn. i S i x, i k g, g e c) Using a 99% confidence level, how large a sample should he used to provide a margin of error of1,5? w W k f , v21 6 i l I: m wwww E f k.» “’5’ " 57 in!“ kWh” «WV/M re 3:” j x (1) Using a 95% confidence level, how large a sample should be used to provide a margin of error of 1.0? £2,” “a, R‘s l _ W W w \ rig W - f/<;¢»§‘ } HE if} 2 if X 33 _& my [/Zf is I} \E g i r“ or” t K e) Using a 95% confidence level, how large a sample should be used to provide a margin of error of 0.5 / [W fag} RX Wham 40?, < gifwéfljmgc j E} i, o a a? g \«n / 2250Qui218P l 2) The minimum price per day to rent a car in t 6 United States has been determined to be $40 and the maximum $95. %A sample of 50 rental prices were determined to have a mean of $63.50. a) What is the planning value for the population standard deviation? 4/“ , , W W m Egg: MW e 6 er W e .r “.2” WWW ? MMWW ‘1 g :7? ? f“ i <75 of « b) Using a 95% confidence level, how large a sample should be used to provide a margin of error of $5? c) Using a 95% confidence level, how large a sample should be used to provide a margin of error of $1? W; fi ’ fl if”; W“; at {i WQQ / if i <2 we «M f: WWW my ( g 1/ gig I 2/” a...” / kw Now” My“ 3) A simple random sample of 1000 individuals provided 470 “Yes” responses, :1) Using a 95% confidence level, how large a sample slfiLguld be used to We provide a margin of error of 0.03? w ' gw :39 (pea. g E ' m f r /rrl?¢w@ @ flaw ml WW7T§ j i " ' :3 / 5% Jr?) W e! f \K {hwy K“ ‘g gkg’figfixifl b) Using a 95% confidence level, how large a sample should be used to RNMMMWWWM provide a margin of error of 0.02? a "i ‘2’; , r if p mg: 1 weew “Eider I fib/ Le , i W WW. WWW MadmenTm-awa‘fl‘ c) Assuming you didn’t know the proportion “Yes” before collecting the sample, what is the number would you need in your sample to ensure a margin of error of 0.03 at a confidence level of 95%? (fiflfiaoadw/Miw “:4 “WWW . e 5:? [i ’ \x 2250Qui218P 5 Km. ...
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This note was uploaded on 02/05/2012 for the course MGT 2250 taught by Professor Milne during the Summer '08 term at Georgia Tech.

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Quiz+_18 - MGT 2250 -- Quiz #18 2 Sides A a Answers: my?“...

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