stats 363 HW 8-4

stats 363 HW 8-4 - Section 8.4 Exercise 8.3 The margin of...

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Section 8.4 Exercise 8.3 . The margin of error in estimating is given by Margin of error = 1 : 96 ± p n . ( a ) If n = 30 and ± 2 = 0 : 2, then 1 : 96 ± p n = 1 : 96 p 0 : 2 p 30 = 0 : 160. ( b ) If n = 30 and ± 2 = 0 : 9, then 1 : 96 ± p n = 1 : 96 p 0 : 9 p 30 = 0 : 339. ( c ) If n = 30 and ± 2 = 1 : 5, then 1 : 96 ± p n = 1 : 96 p 1 : 5 p 30 = 0 : 438. Exercise 8.5 . The margin of error in estimating is given by Margin of error = 1 : 96 ± p n . ( a ) If n = 50 and s 2 = 4, then 1 : 96 ± p n ± 1 : 96 p 4 p 50 = 0 : 554. ( b ) If n = 500 and s 2 = 4, then 1 : 96 ± p n ± 1 : 96 p 4 p 500 = 0 : 175. ( c ) If n = 5000 and s 2 = 4, then 1 : 96 ± p n ± 1 : 96 p 4 p 5000 = 0 : 055. Exercise 8.7 . The margin of error in estimating p is given by Margin of error = 1 : 96 r pq n .

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( a ) If n = 30, then 1 : 96 r pq n ± 1 : 96 s (0 : 5) (0 : 5) 30 = 0 : 179. ( b
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This note was uploaded on 04/20/2008 for the course MTH 1363 taught by Professor Cheng during the Spring '08 term at Creighton.

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stats 363 HW 8-4 - Section 8.4 Exercise 8.3 The margin of...

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