Class Meeting 12

Class Meeting 12 - CHEN 3010 Applied Data Analysis Class...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEN 3010 Applied Data Analysis Class Meeting #12 Thursday, Oct. 7 th Today's Topics Reading for next Tuesday: pages 162-170 Homework #6 posted on web site, due Thu., Oct. 14 th Review of hypothesis testing concepts The "variance known" case: hypothesis testing confidence intervals Workshop on "variance known" tests
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4-3 Hypothesis Testing 4-3.3 One-Sided and Two-Sided Hypotheses Two-Sided Test : One-Sided Tests :
Background image of page 2
Hypothesis testing concepts Type I error (α) and associated test Alternate hypothesis: H 1 – what we want to prove or test uses > , < or called one-sided two-sided Null hypothesis: H 0 – the base case uses = always We reject H 0 / accept H 1 when H 0 is true Obtain sample, compute x If is far enough out of spec to be too unusual, we conclude that H 0 is false and H 1 is true x 4-3 Hypothesis Testing
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Normal Distribution with Two-sided Critical Region 0.00E+00 1.00E+00 2.00E+00 3.00E+00 4.00E+00 5.00E+00 6.00E+00 39.6 39.7 39.8 39.9 40 40.1 40.2 40.3 40.4 xbar f(xbar) 2 α 2 an value either here or there is too unusual to support H 0 , so we reject in favor of H 1 x
Background image of page 4
4-4 Inference on the Mean of a Population, Variance Known 4-4.1 Hypothesis Testing on the Mean We wish to test : The test statistic is :
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4-4 Inference on the Mean of a Population, Variance Known 4-4.1 Hypothesis Testing on the Mean Reject H 0 if the observed value of the test statistic z 0 is either: z 0 > z α /2 or z 0 < -z α /2 Fail to reject H 0 if -z α /2 < z 0 < z α /2
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/11/2011 for the course CHEN 3010 taught by Professor Kompala,dh during the Spring '08 term at Colorado.

Page1 / 26

Class Meeting 12 - CHEN 3010 Applied Data Analysis Class...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online