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Unformatted text preview: S p 2 = 4, and construct a 95% C.I. for μ X – μ Y as ( ³ ´ − µ ¶ ) · ¸ ¹ º ⁄ (2 » − 2) ¼ ½ ¾ 2 ¿ = (16 − 13) · À Á . ÂÃ Ä ⁄ (34) × 2 × 1 3 What ’ s wrong? Instead, Taylor this time constructs a new set of data as D i = X i – Y i , and compute the sample mean and the sample variance of D , for instance, Å Æ = 1.2 and S D 2 = 0.64. Then he constructs the C.I. as ÇÈ É · Ê Ë Ì ⁄ ( Í − 1) × ÎÏ Ð √Ñ ⁄ ÒÓ . What is the difference? What assumption does he need? Compute the C.I. for this example. Taylor 23 March 2009...
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This note was uploaded on 11/16/2009 for the course ECO 2121 taught by Professor Professorwen during the Fall '08 term at Al Ahliyya Amman University.
 Fall '08
 ProfessorWen

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