http://www.ck12.org Chapter 3. Introduction to Discrete Random Variables
The list that is produced contains the count of heads resulting from each set of 4 coin tosses. If you use the right
arrow
(
I)
, you can see how many times from the 10 trials you actually had 4 heads.
To try other types of probability simulations, you can use the Texas Instruments Activities Exchange. Look up simple
probability simulations on http://education.ti.com/educationportal/activityexchange/Activity.do?cid=US&aId=9327
.
Let’s try an example using the Toss Coins simulation.
Example A
A fair coin is tossed 50 times. What is the theoretical probability and the experimental probability of tossing tails on
the fair coin?
To calculate the theoretical probability, we need to remember that the probability of getting tails is^12 , or:
P(tails) =1
2
= 0. 50
To find the experimental probability, we need to run the Toss Coins simulation in the probability simulator. We could
also actually take a coin and flip it 50 times, each time recording if we get heads or tails.
If we follow the same keystrokes to get into the Prob Sim app, we get to the main screen.
Choose Toss Coins and then choose SET by pressing
ZOOM.