HypothesisTesting

HypothesisTesting - CHE 320 Roadmap Probability v Theory...

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Unformatted text preview: CHE 320: Roadmap Probability v Theory for Statistics Random Variables – Discrete & Continuous v Probability Distributions vPoint Estimation v Confidence Intervals v Application of Statistics Hypothesis Testing v ? v ? v 9/19/11 School of Chemical 11 Hypothesis - A statement regarding two or more variables The mean age of CHE 320 students is 20 years vThe average outlet temperature of the coolant from the air-conditioner is 300K v Court room trial: The accused is not guilty v 9/19/11 School of Chemical Statistica l Non-statistical 22 Example I – Gambling Party! You suspect that one of your guests is using a loaded dice. ? I. II. Getting rid of the guest when he/she’s actually playing fairly Letting him/her play when the dice are in fact loaded 9/19/11 School of Chemical 33 Example II – Exam II 100 True or False questions 1. T Cut-off score for passing the exam: 2. F Pas Fa 3. T s il 4. T … … 99. F 100. T 9/19/11 0 I. II. 50 ? 100 Poor student guessing 50+ correct Good student not knowing a section which, by chance, was heavily stressed in the exam School of Chemical 44 Example III – Drug Test Formula innovation Drug manufacturing Bioass ay 100 rats injected with drug ØK of them die Toxi If K = 92, kill the drug c If K = 3, pass Safe it If K = Ø 15, ? 9/19/11 School of Chemical 55 Hypothesis Testing 1. Identify parameter of interest and state Null Hypothesis (H0) 5 .4 . 2. 3 . 2 . 3. 1 . Alternative Hypothesis (H1) Specify level of significance / risk (α) or acceptance region 4. 5. 9/19/11 Data test statistic Conclusions School of Chemical 66 ...
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This note was uploaded on 09/19/2011 for the course CHE 320 taught by Professor Harris during the Spring '10 term at Purdue.

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HypothesisTesting - CHE 320 Roadmap Probability v Theory...

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