Question 1

In practice, the standard error of the difference between means is estimated by.

Accepted Answer

A)  $\sqrt { \left. \frac { \left( \sigma _ { 1 } \right) ^ { 2 } } { n _ { 1 } } + \frac { ( \sigma } { n _ { 2 } } \right) ^ { 2 } }$ 
B)  $s _ { \bar { x } _ { 1 } - \bar { x } _ { 2 } }$ 
C)  $\left( s _ { \bar { x } _ { 1 } - \bar { x } _ { 2 } } \right) ^ { 2 }$ 
D)  $\frac { \sigma _ { 1 } } { n _ { 1 } } + \frac { \sigma _ { 2 } } { n _ { 2 } }$ 
A)  $\sqrt { \left. \frac { \left( \sigma _ { 1 } \right) ^ { 2 } } { n _ { 1 } } + \frac { ( \sigma } { n _ { 2 } } \right) ^ { 2 } }$ 
B)  $s _ { \bar { x } _ { 1 } - \bar { x } _ { 2 } }$ 
C)  $\left( s _ { \bar { x } _ { 1 } - \bar { x } _ { 2 } } \right) ^ { 2 }$ 
D)  $\frac { \sigma _ { 1 } } { n _ { 1 } } + \frac { \sigma _ { 2 } } { n _ { 2 } }$

Question 2

A simulated treatment condition in an experiment is called a(n) control.

Accepted Answer

A) simulated 
B) experimenter 
C) confounded 
D) placebo 
A) simulated 
B) experimenter 
C) confounded 
D) placebo

In practice, the standard error of the difference between means is estimated by.

A simulated treatment condition in an experiment is called a(n) control.

Making Sense of Variability: an Introduction to Statistics

Statistics in the Context of Scientific Research

Looking at Data: Frequency Distributions and Graphs

Looking at Data: Measures of Central Tendency

Looking at Data: Measures of Variability

The Normal Distribution, Probability, and Standard Scores

Understanding Data: Using Statistics for Inference and Estimation

Is There Really a Difference Introduction to Statistical Hypothesis Testing

One-Factor Between-Subjects Analysis of Variance

Two-Factor Between-Subjects Analysis of Variance

One-Factor Within-Subjects Analysis of Variance

Correlation: Understanding Covariation

Regression Analysis: Predicting Linear Relationships

Nonparametric Tests

Filters

Exam 9: The Basics of Experimentation and Testing for a Difference Between Means

In practice, the standard error of the difference between means is estimated by.

A simulated treatment condition in an experiment is called a(n) control.

Making Sense of Variability: an Introduction to Statistics

Statistics in the Context of Scientific Research

Looking at Data: Frequency Distributions and Graphs

Looking at Data: Measures of Central Tendency

Looking at Data: Measures of Variability

The Normal Distribution, Probability, and Standard Scores

Understanding Data: Using Statistics for Inference and Estimation

Is There Really a Difference Introduction to Statistical Hypothesis Testing

One-Factor Between-Subjects Analysis of Variance

Two-Factor Between-Subjects Analysis of Variance

One-Factor Within-Subjects Analysis of Variance

Correlation: Understanding Covariation

Regression Analysis: Predicting Linear Relationships

Nonparametric Tests

Filters