Notes/ examples/ week 5 notes
Notes/ examples/ week 5 notes STA 215
Popular in Introductory Applied Statistics
Popular in Statistics
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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