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E-Text DAinsley T. Smith RES/342 idealistic 28, 2011 Walt Deckert E-Text Chapter Exercise Exercise: 8.48 A encounter of 20 pages was taken without successor from the 1,591-page phone directory Ameritech Pages Plus sensationalistic Pages. On each page, the symbolise ara devoted to designate ads was measured (a display as is a large quite a little a blank of miscellaneous illustrations, maps, and text). The data (in squ ar millimeters) ar shown below: 02603564035360268369428536 268396469536162338403536536130 (a) Construct a 95 percent cartel legal separation for the true plastered. (b)Why talent normality be an hollow here? (c) What sample size of it would be needed to fortune an error of ±10 substantial millimeters with 99 percent authorisation? (d) If this is not a fairish requirement, suggest one that is. (Data are from a project by MBA student Daniel R. Dalach.) A. As the scarper variance is understood and the streamlet magnitude is smaller, I wll extend to the t-distribution. stand out Megastat computations are as below: 95%| integrated trust level| 346.5| slopped| 170.38| standardised. deviation.| 20| n| 2.093| t (df = 19)| 79.740| half-width| 426.240| upper confidence de dressate| 266.760| discredit confidence position| So, a 95 % self-confidence interval is between 266.760 and 426.240. B.

normalcy could be a paradox because there are extremum figures (0s) in the facts set. This will refer the precision of the assurance intervals. C. As we dont have the measurements and sample magnitude, I will choose the z-distribution. Excel Megastat computations are listed below: 99%| confidence level| 346.50| mean| 170.38| std. dev.| 20| n| 2.576| z| 98.134| half-width| 444.634| upper confidence see| 248.366| lower confidence limit| With a confidence interval of 99 %, the z-score is 2.576. An effective mode to get our answer is: (z-value X standard deviation/10)2 (2.576 X 170.38/10)2 =...If you want to get a all-inclusive essay, order it on our website: Ordercustompaper.com

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