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This 2 page Class Notes was uploaded by Theresia Dare on Wednesday September 23, 2015. The Class Notes belongs to STAT202 at Drexel University taught by MerrillLiechty in Fall. Since its upload, it has received 27 views. For similar materials see /class/212421/stat202-drexel-university in Business at Drexel University.
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Date Created: 09/23/15
Stat 202 Exam 1 Study Guide Possibly Useful Formulas Law of Addition PA U B PA PB 7PA H B Conditional Probability PAB PA BPB PBA PA BPA Law of Multiplication PA H B PA PB A concept can be extended for longer sequences Independence PA and B PA PB when A and B are independent concept can be extended for longer sequences Bayes Theorem PA B PB APAPB Counting Rules Combination quot1 Permutation n Tn r n r Descriptive Statistics Sample mean X 2 Sample Standard Deviation S Normal Distribution Z Xu039Z CLT If n gt 30 then X is approximately N u 0 Confidence Intervals For u X i Zea2 ifngt 30 and cr known X i Zea2 Vi ifngt 30 and cr unknown X i twig2 i ifn lt 30 and 0 unknown x For p 3 i Za2 1303 Hypothesis Testing one sample Test for a mean 71 2 30 and cr known Z NZ Test for a mean 71 2 30 and cr unknown Z wquot W Test for a mean n lt 30 and cr unknown tn1 NE 25 200 FOLIO Tl Test for a proportion Z Direction of rej ection region and pValue is determined by H1 pValue is probability of seeing a test statistic more extreme than the one observed