Z test statistic calculator
[DOC File]Study Guide for Exam 1 ~ STAT 110
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Chapter 12 – z and t Tests of Hypotheses. Be able to conduct a z-test “by hand”. Specifically be able to set up the hypotheses to be tested, compute the test statistic, find the associated p-value and state your conclusions correctly using both in statistical and non-statistical terms. Practice Problems: 12.5, 12.17
[DOC File]Chi-Square test for Qualitative Data
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Step 4: Calculate Z using the graphing calculator or Excel (see Lewis). Z Test for the Difference in Two Proportions Data Hypothesized Difference 0 Level of Significance 0.05 Group 1 Number of Successes 104 Sample Size 11037 Group 2 Number of Successes 189 Sample Size 11034 Intermediate Calculations Group 1 Proportion 0.0094 Group 2 Proportion 0.0171 Difference in Two Proportions -0.0077 ...
[DOC File]Statistics Calculator - My Math Genius
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Alpha 0.01 Null 0.3 P-hat 0.39 Sample Size 225 Test Statistic: Z 2.945941518 Critical Value: 2 Tails -2.575829304 2.575829 Critical Value: 1 Tail Upper 2.326347874 Critical Value: 1 Tail Lower -2.326347874 p-value: 2 Tail 0.003219733 p-value: 1 Tail Upper 0.001609866 p-value: 1 Tail Lower 0.998390134 We computed the test statistic to be ~2.95. And the critical value or a 1 tail upper at 1% …
[DOC File]1
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the test statistic—a description of how far the point estimate (our sample statistic) falls from the parameter value in the null hypothesis . P-value —an objective measure of the strength of evidence which the data supplies in favor of the null hypothesis: the probability of getting a result as extreme or more extreme than the one observed if the proposed null hypothesis is correct. IV ...
[DOC File]The Practice of Statistics
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z statistic. one-sample t statistic. two-sample t statistic. robust. power. pooled Calculator Skills: normalpdf (X) tpdf (X, df) ShadeNorm (leftendpoint, rightendpoint) Shade_t (leftendpoint, rightendpoint, df) TInterval. T-Test. 2-SampTTest. 2-SampTInt 12.1 Tests About a Population Mean. Under what assumptions is s a reasonable estimate of ?
[DOC File]Chapter 11- Testing A Claim
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1-sided 2-sided test statistic significance level Type I Type II. Power α β σ Calculator Skills: z-test z-interval Title: Chapter 11- Testing A Claim Author: rois Last modified by: Rois Bob Created Date: 2/23/2016 8:33:00 PM Other titles: Chapter 11- Testing A Claim ...
[DOC File]Hypothesis Testing and Confidence Intervals
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Hypothesis Testing and Confidence Intervals. INFERENCE PROCEDURE CONDITIONS TEST STATISTIC CONFIDENCE INTERVAL CALCULATOR One Mean. is known. Z-test. Z-Interval SRS? Normal? (Is n large enough? If not GRAPH!) Independent? 10n < pop. Stat/Test/ ztest or zinterval One Mean. is UNKNOWN. t-test . t-interval SRS? Normal? (Is n large enough? If not GRAPH!) …
[DOCX File]math.arizona.edu
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Test 2 – covers chapters 12 – 23 (excludes chapter 19) It is always a good idea to look at the chapter summaries at the end of every chapter and to do the “Check your skills” problems. Of course, it is also a good idea to do more exercises than you are assigned. Remember you will be given no tables on the exam. You expected to know how to use your calculator to answer questions about ...
[DOC File]STATS CHEAT SHEET - StFX
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Critical Z-Test values: 1-Tailed 2-Tailed α = .05 1.64 1.96/-1.96 α = .01 2.33 2.58/-2.58 EXAMPLE: SINGLE SAMPLE T-TEST. In order to run a Single Sample T-test you must: Be provided with Population (Use the sample Standard Deviation to predict Population (Equations: df = N – 1. EXAMPLE: PAIRED SAMPLES T-TEST. Paired Samples T-Tests: Are also known as Dependent or Matched T-Tests. Do …
[DOC File]Sign Test
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5. Calculate a test statistic. Use a graphing calculator (or a formula) and your data. This is the actual value of a statistic (such as “z” or “t”) that corresponds to your data. AFTER: (Interpret your result; decide if it’s significant.) 6. Compare the test statistic with the critical value. You need to determine which value is greater.
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