When Events a and B Are Mutually Exclusive but Not

question 105

Multiple Choice

When events A and B are mutually exclusive but not exhaustive, p ( A or B ) equals _________.

• A) 0.50
• B) 0.00
• C) 1.00
• D) cannot be determined from the information given

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Definitions:

Variation

The occurrence of an organism, trait, or gene in more than one form, leading to diversity within a population.

Statistic

A numerical datum or piece of data derived from a study of a large quantity of numerical data, used for analyzing features of that population.

p < .05

A statistical term indicating that the probability of the observed data, or more extreme, under the null hypothesis is less than 5%, suggesting the results are statistically significant.

Probability

A measure of the likelihood of a particular event or outcome occurring, expressed on a scale from 0 (impossibility) to 1 (certainty).