Module 4 Practice Questions

Front

What does P(A) = 0.12 indicate about event A?

Back

Event A will not happen most of the time, but it is not an extremely rare event.

Front

How do you calculate the probability of selecting a Salsa Dancer from a group of dancers?

Back

Probability = (Number of Salsa Dancers) / (Total Number of Dancers) = 30/75 = 0.40.

Front

What is the probability of randomly selecting a person with a PhD from a sample?

Back

Probability = (Number of PhD holders) / (Total number of people in the sample) = 0.54.

Front

If a number wheel is divided into 15 segments, what is the probability of spinning a 1, 2, or 3?

Back

Probability = (Number of favorable outcomes) / (Total outcomes) = 3/15 = 0.20.

Front

What probability value indicates an unlikely event?

Back

A probability of 0.01 indicates that the event is unlikely to happen.

Front

Define probability in the context of events.

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What is the range of probability values?

Back

Probability values range from 0 (impossible event) to 1 (certain event).

Front

What does a probability of 0.5 signify?

Back

A probability of 0.5 signifies that the event is equally likely to occur or not occur.

Front

How do you interpret a probability of 0.75?

Back

A probability of 0.75 indicates that the event is likely to occur.

Front

What is the formula for calculating the probability of an event?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes).