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Notes/ examples/ week 5 notes

by: Angela Meador

Notes/ examples/ week 5 notes STA 215

Marketplace > Grand Valley State University > Statistics > STA 215 > Notes examples week 5 notes
Angela Meador

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About this Document

Week 5 notes includes steps, examples, and key terms
Introductory Applied Statistics
Robert H. Pearson
Class Notes
hypothesis testing of means, introductory, applied statistics, type1error, type2error, Pvalue
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This 1 page Class Notes was uploaded by Angela Meador on Friday September 30, 2016. The Class Notes belongs to STA 215 at Grand Valley State University taught by Robert H. Pearson in Fall 2016. Since its upload, it has received 4 views. For similar materials see Introductory Applied Statistics in Statistics at Grand Valley State University.


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Date Created: 09/30/16
Hypothesis Test 1. Null­ Ho­  a. NOT p hat b. = or less than and = Alternative­ Ha a. Not equal to b. Greater than c. Less than d. From research question 2.  Check a. NP (Size)(Po)= predictable victories b. N(1­P) (size)(1­Po)= predictable disappointments 3. Test Statistic a. Z= Phat –Po / by square root of Po(1­Po)/n a. Z= (Detected measurement) – (Anticipated value if Ho is true)/  Standard Error 4. Deciding a. Find P­Value a. Look Z up on table If P­value is smaller than significance level REJECT 5. Inference a. Significance level b. Population c. The trait “Using a significance level of alpha (..) we do not (if p­value is bigger than  significant level) (If p­value is smaller we do) have evidence that the proportion of all (population) from (trait) is exceeds(Bigger) or different (smaller) %.” Type 1 error Reject Ho but true  Pr (Type 1 error) = alpha Type 2 error Do not reject H0 but false  Pr (type 2 error) = Beta  1­B= Power


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