Chapter 2: Math, Angle, and Test Operations 51
Chapter 2:Chapter 2:Chapter 2:Chapter 2:Math, Angle, and Test OperationsMath, Angle, and Test OperationsMath, Angle, and Test OperationsMath, Angle, and Test Operations

Getting Started: Coin Flip

Getting Started: Coin FlipGetting Started: Coin Flip

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 MATHPRB menu. Press 7 to select
7:randBin( (random Binomial). randBin( is pasted
to the home screen. Press 10 to enter the number
of coin flips. Press ¢. Press Ë5 to enter the
probability of heads. Press ¢. Press 40 to enter
the number of simulations. Press ¤.
2. Press Í to evaluate the expression. A list of
40 elements is generated with the first 7 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.