Question

6.70Even more on downloading music from the Internet. The following quotation is from a survey of Internet users. The sample size for the survey was 1371. Since 18% of those surveyed said they download music, the sample size for this subsample is 247. Among current music down loaders, 38% say they are downloading less because of the RIAA suits.... About a third of current music down loaders say they use peer-to-peer networks . . . 24% of them say they swap files using email and instant messaging; 20% download files from music-related Web sites like those run by music magazines or musician homepages. And while online music services like iTunes are far from trumping the popularity of file-sharing networks, 17% of current music down loaders say they are using these paid services. Overall, 7% of Internet users say they have bought music at these new services at one time or another, including 3% who currently use paid services.28 (a) For each percent quoted, give the margin of error. You should express these in percents, as given in the quotation. (b) Rewrite the paragraph more concisely and include the margins of error. (c) Pick either side A or side B below and give arguments in favor of the view that you select. (A) The margins of error should be included because they are necessary for the reader to properly interpret the results. (B) The margins of error interfere with the flow of the important ideas. It would be better to just report one margin of error and say that all the others are no greater than this number. If you choose View B, be sure to give the value of the margin of error that you report

Answer 1

Ouestiona * Selution ySomplecize determinafion Here n = 1371 24F = (0.lt) (o ga) (1-96) d 2 2 d 2 249 di: 0.047 싣 5-1e 38 aa they doun loads lees, because of RTAA ouuHs HeTE P. = 0.3g, g=0, 62 , Herer. 520 2. d2 029 Selo 24 이. of the swap files using emad | nos 329 (ou b sampie da (e-24)(016)(130° gag = 凸 20 deuwloads files from, music related gr74 옷 녹 (o 2) ((.zo) (1.9く12.

11 using paid services 233 (o-17) (6-83) (1-96 2. 233 = 0.5420 010, of Tr, ternet use13 go y千hat they have bought music ineluding 3t he currently use paid eeTvice 几 55 =(M) (043) 【196)" b)The follutng quotation fs from a Gurvey of Inteineb use T'5. The sample gite for this gurvey was 18t, Since a lg小 those guTV eyed| gaidīhey doonloq dmusic twitb 5 maryin of eTroT Among current musie doonlooders Beto say they are doen loadg less because of the RIA suits ueitb e margio oF enrer 24l of them say that they suap files using email arolīnstant messaging pitb5-le margin eterT6Y Ω0小oloon load files fmm music.. relafeoloeg sites . with Se)。 margin of eYmY· 17.1。.of current douon logolem3. gay fha_ he e-trtyht are us ing+4 paid services coith desired margir, error is, 5010,. Cver all γ01 e of Tnternet user ay they have bought muste at these neuw services at n ey time or ansther ineludling 34 eurrently use paid services.with 7.1° margin ōfeTTo r e ero should be ineluded becaus should ) A) "The margin。f A) The marg in of theu are necessary. foT properly interpret the resu