Probability Test 1 Fall 2024

Front

What is the probability of an event?

Back

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

Front

Define experimental probability.

Back

Experimental probability is the probability determined by conducting an experiment and observing the outcomes, calculated as the number of successful outcomes divided by the total number of trials.

Front

What is the formula for calculating the probability of two independent events A and B occurring?

Back

P(A and B) = P(A) * P(B) for independent events.

Front

What is the probability that a randomly selected woman likes the color blue if the probability of being a woman is 40% and the probability that a woman likes blue is 10%?

Back

0.04 (0.4 * 0.1 = 0.04).

Front

How do you calculate the probability of an event not occurring?

Back

P(not A) = 1 - P(A).

Front

What is the probability that a person picked will be a boy given they speak German if the probability of speaking German is 0.4 and the probability of being a boy is 0.7273?

Back

0.7273.

Front

What is the addition rule of probability?

Back

The addition rule states that the probability of the occurrence of at least one of two events A or B is P(A or B) = P(A) + P(B) - P(A and B).

Front

If a student plays a team sport or an instrument, what is the probability of either event occurring if the combined probability is 0.65?

Back

0.65.

Front

How many different combinations of classes can a student take if they choose 4 classes from 6 available core classes?

Back

15 combinations.

Front

What is the experimental probability of getting heads if a coin is flipped 20 times and heads appears 11 times?

Back

11/20.