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Notes/ examples/ week 5 notes STA 215

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Week 5 notes includes steps, examples, and key terms
COURSE
Introductory Applied Statistics
PROF.
Robert H. Pearson
TYPE
Class Notes
PAGES
1
WORDS
CONCEPTS
hypothesis testing of means, introductory, applied statistics, type1error, type2error, Pvalue
KARMA
25 ?

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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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