CC1 Ch. 5 Review: Probability & Expressions (24-25)

Front

What is experimental probability?

Back

Experimental probability is the ratio of the number of times an event occurs to the total number of trials or experiments conducted.

Front

How do you calculate the experimental probability of rolling a 1 on a 6-sided die if it was rolled 90 times and resulted in 13 ones?

Back

The experimental probability is calculated as 13 (number of times 1 was rolled) divided by 90 (total rolls), which equals 13/90.

Front

What is the probability of spinning an even number on a spinner with numbers 1 to 6?

Back

The probability of spinning an even number (2, 4, 6) is 3 out of 6, which simplifies to 1/2 or 50%.

Front

If n = 7, what is the value of the expression 8 + n?

Back

The value of the expression 8 + n is 15.

Front

What is the probability of choosing a striped marble from a bag if there are 4 striped marbles out of 10 total marbles?

Back

The probability is 4 (striped marbles) divided by 10 (total marbles), which equals 0.4.

Front

What is the probability of choosing either a solid black or solid white marble if there are 6 solid black and 4 solid white marbles in a bag of 20 marbles?

Back

The probability is (6 + 4) / 20 = 10/20 = 0.5 or 50%.

Front

Define 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 formula for calculating the probability of an event?

Back

The formula is P(Event) = Number of favorable outcomes / Total number of possible outcomes.

Front

What is a sample space in probability?

Back

A sample space is the set of all possible outcomes of a probability experiment.

Front

If a spinner has 8 equal sections numbered 1 to 8, what is the probability of landing on a number greater than 5?

Back

The probability is 3 (numbers 6, 7, 8) out of 8, which simplifies to 3/8.