Inference for One Sample

Jan 07, 2014

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Recall: 2 Types of Inference. EstimationGoal: Provide a specific approximation for a parameterResult: Numerical IntervalTests of HypothesesGoal: Judge whether a parameter might equal a particular valueResult: ?Yes" or ?No". Confidence Intervals. Idea: an estimate that reflects the uncertainty i

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Inference for One Sample

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Two Sample Inference for Means

Summary Slide. ReviewF testTest of two meansSmall sample, equal varianceSmall sample, unequal varianceSmall dependent sample. Review. Frequency distributions and descriptive statistics.Comparing an observation to a distribution.Comparing two distributions.. Objectives. To learn how to compare

561 views • 28 slides

One-sample

One-sample. In the previous cases we had one sample and were comparing its mean to a hypothesized population mean However in many situations we will use the t-test to compare two samples/groups of data. Two samples. Previously compared sample mean to a known population mean

494 views • 25 slides

Two-Sample Inference for Proportions

Statistics 111 - Lecture 15. Two-Sample Inference for Proportions. Administrative Notes. HW 5 due on July 1 (next Wednesday) Exam is from 10:40-12:10 on July 2 (next Thursday) Will focus on material covered after midterm

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Two-Sample Proportions Inference

Sampling Distributions for the difference in proportions . When tossing pennies, the probability of the coin landing on heads is 0.5. However, when spinning the coin, the probability of the coin landing on heads is 0.4. Let's investigate.Pairs of students will be given pennies and assigned to ei

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One Sample Mean Inference (Chapter 5)

One Sample Mean Inference (Chapter 5). In Unit 2 we will discuss:. How to estimate the mean from a normal distribution and compute a 95% confidence interval for the true unknown population mean. How to statistically test whether the population sampled could have a specified population mean.

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One-way ANOVA Inference for one-way ANOVA

One-way ANOVA Inference for one-way ANOVA. IPS Chapter 12.1. © 2009 W.H. Freeman and Company. The idea of ANOVA. Reminders: A factor is a variable that can take one of several levels used to differentiate one group from another.

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Inference for One-Sample Means

Inference for One-Sample Means . Steps for doing a confidence interval:. State the parameter Conditions 1) The sample should be chosen randomly 2) The sample distribution should be approximately normal - the population is known to be normal, or

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Two Sample Inference for Means

Two Sample Inference for Means. Farrokh Alemi Ph.D Kashif Haqqi M.D. Summary Slide. Review F test Test of two means Small sample, equal variance Small sample, unequal variance Small dependent sample. Review. Frequency distributions and descriptive statistics.

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6.5 One and Two sample Inference for Proportions

6.5 One and Two sample Inference for Proportions. np >5; n(1-p)>5 n independent trials; X=# of successes p=probability of a success Estimate:. Mean and variance of.

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6.3 One and Two-Sample Inference for Means

6.3 One and Two-Sample Inference for Means. Example. JL Kim did some crude tensile strength testing on pieces of some nominally .012 in diameter wire of various lengths. The lengths are given in the data file WIRE in the class directory.

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6.3 Two-Sample Inference for Means

6.3 Two-Sample Inference for Means. November 17, 2003. Paired Differences. Matched Pairs Design experimental plan where the experimental units are divided into halves and two treatments are randomly assigned to the halves

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6.4 One and Two-Sample Inference for Variances

6.4 One and Two-Sample Inference for Variances. Example - Problem 26 – Page 435. D. Kim did some crude tensile strength testing on pieces of some nominally 0.012 in. diameter wire of various lengths.

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Two-Sample Proportions Inference

Two-Sample Proportions Inference. Two-Sample Proportions Inference. Sampling Distributions for the difference in proportions.

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Chapter 12 Statistical Inference: Other One-Sample Test Statistics

Chapter 12 Statistical Inference: Other One-Sample Test Statistics I One-Sample z Test for a Population Proportion, p A. Introduction to z Test for a Population Proportion . 1. The binomial function rule can be used to determine the probability of r

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Inference for One-Sample Means

Inference for One-Sample Means. Steps for doing a confidence interval:. State the parameter Conditions 1) The sample should be chosen randomly 2) The sample distribution should be approximately normal - the population is known to be normal, or

343 views • 20 slides

Two-Sample Proportions Inference

Two-Sample Proportions Inference. Two , independent SRS’s from populations Population s at least 10n Normal approximation for both. Assumptions:. Formula for confidence interval:. Margin of error!. Standard error!. Note: use p-hat when p is not known.

239 views • 13 slides

Two-Sample Proportions Inference

Two-Sample Proportions Inference. Sampling Distributions for the difference in proportions. When tossing pennies, the probability of the coin landing on heads is 0.5. However, when spinning the coin, the probability of the coin landing on heads is 0.4. Let’s investigate.

214 views • 14 slides

Inference for Proportions One Sample

Inference for Proportions One Sample. Confidence Intervals. One Sample Proportions. Rate your confidence 0 - 100. Name my age within 10 years? within 5 years? within 1 year? Shooting a basketball at a wading pool, will make basket? Shooting the ball at a large trash can, will make basket?

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Hypothesis Testing: Two -Sample Inference

Hypothesis Testing: Two -Sample Inference. power of the test = 1 − Pr (type II error). power >= 80% is required. Home Work/Due Mon. 11.6, paper.

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Two Sample Inference for Means

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