Chapter 20 – Estimating Proportions With Confidence
The most common confidence interval is 95% constructing a confidence interval is different depending
on the type of question asked and the sample used.
The most common way to construct a confidence interval is by using the margin of error. Sample
Proportion + margin of error.
Chapter 21 – Role of confidence Intervals in Research
We need to distinguish between population standard deviation and the standard deviation for sample
means (population standard deviation/sqrt(n)). The standard error of the mean (SEM) is the same as
standard deviation for sample means.
To construct a confidence