alleryStart learning →A probability of one for an event means which of these?
AThe event is guaranteed to occur
BThe event occurs once in ten trials
CThe event is guaranteed not to occur
DThe event occurs in half of all trials
Answer & Solution
Correct answer: A. The event is guaranteed to occur
1. Probabilities run from zero to one.
2. A probability of one means the event is guaranteed to occur.
3. A probability of zero is the one that guarantees the event will not occur.
4. One in ten and one in two would be written as 0.1 and 0.5.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 12 "Mendel's Experiments and Heredity", section 12.1 Mendel's Experiments and the Laws of Probability_
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