COMS 100C: Chapter 8
Inferential statistics allow us to make an inference about a wider population with 100% certainty.
False
This range of possible values calculated for a particular level of confidence is called the confidence interval.
True
Inferential statistics are based on the assumption(s) EXCEPT ___
snowball sampling
The extent to which sample data reflect the wider population from which the sample was drawn can be estimated using which one of the following?
inferential statistics
The probability of sampling any value under the normal curve that is greater than the mean is
0.5
The probability of sampling any value under the normal curve is _____
1.00
The properties of a normal curve are such that ______ of the values under it occur plus or minus 1 standard deviation from the mean.
68%
In a normal distribution, most values are __
in the middle of the distribution
Type I error is deciding that ___
you have a significant finding when in fact you do not
Type II error is deciding that ______.
you have no significant result when in fact you do