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Week 1: person E-text Chapter exercise 8.48 A bladderwrack of 20 pages was taken without replacement from the 1,591-page phone directory Ameritech Pages Plus yellow(a) Pages. On each page, the specify bea devoted to prove ads was measured (a display ad is a large pant rule of multicolored illustrations, maps, and text). The info (in second force millimeters) are shown below: 0 260 356 403 536 0 268 369 428 536 268 396 469 536 162 338 403 536 536 130 (a) make out a 95 portion boldness time interval for the true mean. Mean +/- [z(sigma/(n^.5))]= 346.5 +/- [1.96 (170.37837/(20^.5))]= 346.5 +/- [74.67221] = 421. 17 < mu< 271.83 (b) Why competency north be an issue present? Normality major power be an issue because the choosing of pages whitethorn non have been need under random conditions. (c) What judge size would be mandatory to prevail an error of °æ10 jog millimeters with 99 share confidence? Error= t x standard aside/ (n^.5) 10= 2.575 x 170.37837/ (n^.5) n^.5= 438.7243/10 n= (43.8743)^2= 1924.79= 1925 rounded, would be the sample size to obtain an error of +/- 10 square mm with 99% CI (d) If this is non a reasonable need, knock up one that is. If this is not a reasonable extremity thus I female genitalia suggest trying to accrue the requirement of the confidence. Chapter exercise 8.

64 acerbic an unpopped kernel of popcorn hurts! As an experiment, a self-confessed novice of cheap popcorn carefully counted 773 kernels and position them in a popper. After popping, the unpopped kernels were counted. There were 86. (a) Construct a 90 share confidence interval for the affinity of either kernels that would not pop. p= 86/773=0.1113, q=1-p=0.8887, z=1.645 for 90%CI, p-z x [(pq/N)^.5] to p + z x [(pq/N)^0.5) 0.1113-1.645 [(0.1113 x 0.8887/773)^.5] to 0.1113 + 1.645 [(0.1113 x 0.8887/773)^.5] 0.09269 to 0.12991 (b) square off the due north assumption. pn= (p-hat)x n= (86/773)773>5; nq= (687/773)773>5; Normality go aside be present because twain pn and nq are...If you want to get a full essay, order it on our website: Ordercustompaper.com

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