There Were 5

question 28

Multiple Choice

There were 5.2 people per acre in 2012.A census in 2017 found there were 1.2 people per acre.This change represents a(n) ________ in population ________.

• A) decrease; size
• B) decrease; density
• C) increase; size
• D) increase; density

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Definitions:

P-value

The probability of observing the tested result, or one more extreme, if the null hypothesis is true.

α

Typically represents the level of significance in hypothesis testing, indicating the probability of rejecting the null hypothesis when it is true.

Type I Error

The statistical mistake of rejecting a null hypothesis when it is actually true, also known as a "false positive".

Type II Error

The error that occurs when the null hypothesis is falsely not rejected, missing the detection of an actual effect.