### Home > CCAA > Chapter 1 CC2: Unit 1 > Lesson CC2: 1.2.1 > Problem 1-59

Write “theoretical” or “experimental” to describe the probabilities for each of the following situations.

The chance of getting tails when flipping a coin is

. Remember that theoretical probabilities are calculated mathematically based on what is expected while experimental probabilities are based on data collected in experiments.

Theoretical

I flipped a coin eight times and got heads six times, so the probability is

. Is this probability based on data from an actual test of flipping a coin?

Experimental

My mom packed my lunch three of the past five days, so the probability of my mom packing my lunch is

. Ask yourself the same questions as you did in parts (a) and (b).

The chance of winning the state lottery is

in . Did someone actually test the probability of winning the lottery?

Based on mathematical models, the chance of rain today is

. One way to calculate probability without physically testing it is to use a mathematical model

Lena got three “hits” in her last seven times at bats, so her chance of getting a hit is

. How did Lena determine the probability that she would get a hit at her next bat?