Getting Started: Coin Flip - Texas Instruments TI-83 Manual Book

Getting Started: Coin Flip

Getting Started is a fast-paced introduction. Read the chapter for details.
Suppose you want to model flipping a fair coin 10 times. You want to track
how many of those 10 coin flips result in heads. You want to perform this
simulation 40 times. With a fair coin, the probability of a coin flip resulting in
heads is 0.5 and the probability of a coin flip resulting in tails is 0.5.
1. Begin on the home screen. Press  | to
display the
MATH PRB
select
7:randBin(
is pasted to the home screen. Press
randBin(
to enter the number of coin flips. Press
10
¢. Press Ë
to enter the probability of
5
heads. Press ¢. Press
number of simulations. Press ¤.
2. Press Í to evaluate the expression. A
list of 40 elements is displayed. The list
contains the count of heads resulting from
each set of 10 coin flips. The list has 40
elements because this simulation was
performed 40 times. In this example, the
coin came up heads five times in the first
set of 10 coin flips, five times in the second
set of 10 coin flips, and so on.
3. Press ¿ y ã
to the list name
data for another activity, such as plotting a
histogram (Chapter 12).
4. Press ~ or | to view the additional counts
in the list. Ellipses (
continues beyond the screen.
Note: Since randBin( generates random
numbers, your list elements may differ from those
in the example.
2-2 Math, Angle, and Test Operations
menu. Press
(random Binomial).
to enter the
40
ä Í to store the data
L1
. You then can use the
L
1
) indicate that the list
...
to
7