Lecture03

Lecture03 - STAT 350 L ECTURE 3 H OMEWORK 1: D UE F RIDAY ,...

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Unformatted text preview: STAT 350 L ECTURE 3 H OMEWORK 1: D UE F RIDAY , J AN 21 Section 1.3(pg 31): 19, 21, 23, 24 Section 1.4 (pg 41-42): 31, 33, 36, 38, 40 Please do the following Name, Class Time, and Homework # Box your answers Staple your homework C ONTINUOUS D ISTRIBUTION : D ENSITY F UNCTION A density function f(x) for a continuous distribution has the following properties: E XPONENTIAL D ISTRIBUTION 1.4 N ORMAL DISTRIBUTION Historical Notes: 1720: the normal curve was discovered by Abraham de Moivre The Doctrine of Chances, 2 nd edition 1870: the normal curve was used as an ideal histogram by Adolph Quetelet Normal curves models many real life phenomena: errors, heights, weights, etc very important for later chapters N ORMAL D ENSITY F UNCTION Symmetric Uni-modal Ж : center М : spread Large М wider Smaller М narrower Area == ? N ORMAL DISTRIBUTION F UNCTION where Ж and М are specific parameters of the function. S TANDARD N ORMAL D ISTRIBUTION When Ж = 0 and М = 1: Gets special “letter”, z or z-score Z Table (available in textbook): looking up proportion of values less than z* E...
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This note was uploaded on 02/06/2012 for the course STAT 350 taught by Professor Staff during the Spring '08 term at Purdue.

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Lecture03 - STAT 350 L ECTURE 3 H OMEWORK 1: D UE F RIDAY ,...

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