120a10_hw8

# 120a10_hw8 - that the bus arrive after 10:25 Finally...

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Name: Pstat120a Winter 2010 Homework 8 Thursday, March 11 All from Chapter 5 Reading Read chapter 5, sections 1-5, up to (but not included) section 5.5.1 (skip examples 2d, 3d, 5b). Problem 1: Problem 5.6. In addition, compute the variance for b). What is it for c)? (No need for computations if you recall that E ( X 2 ) E ( X ) 2 since the variance is always ¿0). Problem 2: 5.15 (we did only the sketch of how do that in class, but this is just like example 4b). Problem 3: Problem 5.13. For b), ﬁrst compute the probability that the bus is not arrived yet at 10:15, then the probability
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Unformatted text preview: that the bus arrive after 10:25. Finally, translate the question in terms of the random variable you have used so far. If you’ve done the self tests problems below, this problem should be actually very easy. Problem 4: Problem 5.11. Hint, the answer is P ( U < 1 / 5) + P ( U > 4 / 5) = ··· Self test problems: From chapter 5: Problems 7, 10, 11, 16...
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## This note was uploaded on 03/21/2011 for the course STAT 120A taught by Professor Englander during the Summer '09 term at UCSB.

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