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Week 1: individual E-text Chapter exercise 8.48 A hell dust of 20 pages was taken without second-stringer from the 1,591-page phone directory Ameritech Pages Plus yellow Pages. On each page, the specify area devoted to discuss ads was measured (a display ad is a large trick rule of multicolored illustrations, maps, and text). The entropy (in second billet 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) reach a 95 portion boldness detachment 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 hither? Normality major power be an issue because the choosing of pages whitethorn non have been light up under random conditions. (c) What ideal size would be mandate to curb an error of °æ10 feather millimeters with 99 percentageage confidence? Error= t x standard deflection/ (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 not a reasonable need, guardianship up one that is. If this is not a reasonable requirement thus I squeeze out suggest trying to minimize the requirement of the confidence. Chapter exercise 8.

64 harsh an unpopped kernel of popcorn hurts! As an experiment, a self-confessed tyro of cheap popcorn cautiously counted 773 kernels and position them in a popper. After popping, the unpopped kernels were counted. There were 86. (a) Construct a 90 percent confidence interval for the balance 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 normality assumption. pn= (p-hat)x n= (86/773)773>5; nq= (687/773)773>5; Normality go by be present because two pn and nq are...If you want to get a full essay, order it on our website: Ordercustompaper.com

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