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Study Guides
Study Guides

Lecture 3
Lecture 3

Chap1-4
Chap1-4

Chapter 3.5 The Five-Number Summary and Boxplots
Chapter 3.5 The Five-Number Summary and Boxplots

Chapter 6 Statistical inference for the population mean
Chapter 6 Statistical inference for the population mean

3/11/00 252chisq
3/11/00 252chisq

... distribution, gotten from the Normal table by adding or subtracting 0.5. Fo comes from the fact that there are 10 numbers, so that each number is one-tenth of the distribution. For   .05 and n  10 the critical value from the Lilliefors table is 0.2616. Since the largest deviation here is .1293, w ...
3.5 Normal Distributions and z
3.5 Normal Distributions and z

Confidence Intervals I
Confidence Intervals I

Introduction to Statistics Notes
Introduction to Statistics Notes

Pregunta 1 Suponga que una muestra de 35
Pregunta 1 Suponga que una muestra de 35

This part has 10 True-False Questions. Each
This part has 10 True-False Questions. Each

Document
Document

Practice Final
Practice Final

... represent “women under 50 who have a heart attack”, and the event “B” represent “women under 50 who smoke”. Translate each of the following statements into equations involving S, A, and/or B. (a) 20% of women under 50 smoke. ...
Activity 7.5.5 – Inference with Normal Curves
Activity 7.5.5 – Inference with Normal Curves

Stat200_Objectives
Stat200_Objectives

... Given a study objective on the test of two means, determine if the test should use dependent (paired) means, independent means, or two proportions. Given two sample standard deviations for a test of two means, use a "rule of thumb" to determine if the variances can be pooled. Given the results of a ...
Engineering Statistics
Engineering Statistics

L(4!~<rvu (Nt.Tole Two: 7. E 2. E
L(4!~

Jeopardy
Jeopardy

Chapter 9 - Bakersfield College
Chapter 9 - Bakersfield College

a) Statistical power
a) Statistical power

Example 1
Example 1

Chapter 7 Section 1
Chapter 7 Section 1

... 7.34 Potential insurance fraud? Insurance adjusters are concerned about the high estimates they are receiving from Jocko's Garage. To see if the estimates are unreasonably high, each of 10 damaged cars was taken to Jocko's and to another garage and the estimates recorded. Here are the results: Test ...
Variety1 Variety2 Variety3 Variety4
Variety1 Variety2 Variety3 Variety4

Descriptive Intervals
Descriptive Intervals

< 1 ... 154 155 156 157 158 159 160 161 162 ... 280 >

Student's t-test

A t-test is any statistical hypothesis test in which the test statistic follows a Student's t-distribution if the null hypothesis is supported. It can be used to determine if two sets of data are significantly different from each other, and is most commonly applied when the test statistic would follow a normal distribution if the value of a scaling term in the test statistic were known. When the scaling term is unknown and is replaced by an estimate based on the data, the test statistic (under certain conditions) follows a Student's t distribution.
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