Lecture 15 - Course Project Abstracts due on Friday April 4...

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Course Project Abstracts due on Friday, April 4, 2008 (same day as exam 3) Abstracts should be brief and to the point: Tentative Project Title and Four Sentences 1. Objective of the study 2. Summary/Source of the data 3. Anticipated method(s) to be applied 4. How the study relates to your major
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Exam 3 is on Friday, April 4. That exam will cover Chapters 8, 9, and 10 (even though we will get into Chapter 11 before April 4). Homework assignment 3 will subsequently include problems from chapters 8-10 only.
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For large sample tests on two population proportions the test statistic is given by: 12 2 1 11 ˆˆ ˆ ˆ (0 ) / ˆˆˆ / and / and ( ) /( ) Zp p p q nn where px m p y n p x y m n ⎛⎞ =− + ⎜⎟ ⎝⎠ == = + +
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See text for type II error probability and sample size calculation details on page 356 and 100%(1- α ) and confidence interval calculations on page 357.
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Problem 9-47 (page 358) Two sample test on proportions Example Test on proportions with sample size calculation based on β
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11 1 22 2 12 ˆ 30 200 0.15( ) ˆ 180 600 0.3 ˆ 0.263 :0 0.01 oa x n p induced xn p xx p nn Hp p p pp α == = = + + −= −< =< = 9-47 2 1 ˆˆ . 0.15 0.3 4.18 0.0359 Reject Std Error pq Z ⎛⎞ + ⎜⎟ ⎝⎠
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12 01 2 1 2 Sample Data 2002 2003 5726 5384 1105 982 ˆˆ p 0.193 p 0.182 0.1 :. : a mn xx Hp p v sHp p α == = = ˆ 0.188 11 0.00742 0.193 0.182 1.48 0.00742 p StdError pq Z Fail + + ⎛⎞ += ⎜⎟ ⎝⎠ Was the on-time percentage of commercial flights in 2002 the same as in 2003?
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() ( ) 12 2 21 2 1 2 1 1 2 2 2 2 2 2 Find (assuming that n=m) so that .1 when p 0.2, p 0.18 (see page 356) 2 1.645 1.28 6582 n Zp p q q Z p q p q n d Z Z dp p αβ α β == = ++ + + = = ⎛⎞ ⎜⎟ = ⎝⎠ =−
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The 5-Step Hypothesis Testing Procedure Step 1:
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This note was uploaded on 04/08/2008 for the course ENGR 2600 taught by Professor Malmborg during the Spring '08 term at Rensselaer Polytechnic Institute.

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Lecture 15 - Course Project Abstracts due on Friday April 4...

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