PROBABILITY Math

Front

What is probability?

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 probability of drawing a red marble if there are 12 red marbles drawn out of 40 total draws?

Back

The probability of drawing a red marble is 12/40 = 0.30.

Front

If a bag contains 500 marbles and 12 are red, how many red marbles are in the bag?

Back

If 12 out of 40 drawn are red, then the predicted number of red marbles in the bag is 150.

Front

What is the probability of drawing a spade from a standard deck of 52 cards?

Back

The probability of drawing a spade is 13/52 = 1/4.

Front

If you flip a coin 300 times, how many times would you expect to get heads?

Back

You would expect to get heads approximately 150 times.

Front

What is the probability of drawing a blue marble if 24 out of 40 drawn are blue?

Back

The probability of drawing a blue marble is 24/40 = 0.60.

Front

How do you calculate the probability of an event?

Back

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

Front

What is the total number of outcomes when rolling a six-sided die?

Back

The total number of outcomes is 6.

Front

If you draw a card from a deck, what is the probability of drawing a heart?

Back

The probability of drawing a heart is 13/52 = 1/4.

Front

What does it mean if an event is 'impossible'?

Back

An impossible event has a probability of 0, meaning it cannot occur.