Statistics Homework Solutions 102

Statistics Homework Solutions 102 - 102 3. CHAPTER 4 0.999...

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Unformatted text preview: 102 3. CHAPTER 4 0.999 0.99 0.95 0.9 0.75 0.5 0.25 0.1 0.05 0.01 0.001 2 2.5 3 3.5 4 4.5 These data do not appear to come from an approximately normal distribution. 5. 0.999 0.99 0.95 0.9 0.75 0.5 0.25 0.1 0.05 0.01 0.001 0 5 10 15 20 25 The PM data do not appear to come from an approximately normal distribution. 7. Yes. If the logs of the PM data come from a normal population, then the PM data come from a lognormal population, and vice versa. Section 4.11 X50 be the weights of the 50 bags. ¡ 50 0 0707. 1 41. ¨ ¡ ¡ ¨ £ ¥ ¡ ¨ 1 41 is 0.0793. ¨ ¡ ¡ ¤ 0 0793. ¨ 100 15, and σX ¡ ¨ ¡ 2 12. 05 ¨ ¨ ¡ ¡ 100 15 0 0707 ¤£ ¡ ¤ ¨ £ ¥ ¨ ¡ The z-score of 100 is 100 50 ¡ ¡¥¨ (b) X is approximately normally distributed with mean µX 0 0707. ¨ 99 9 ¡ PX ¨ The area to the left of z 100 0 0707 05 ¤£ The z-score of 99.9 is 99 9 100 and σX ¡ Then X is approximately normally distributed with mean µX ¨ ¨¨¨  1. (a) Let X1 ¤ ...
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This note was uploaded on 12/20/2011 for the course STA 3163 taught by Professor Mattgilg during the Fall '11 term at UNF.

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