Download 6.16 independent and dependent practice

DETERMINE IF AN EVENT IS
INDEPENDENT OR DEPENDENT
*
There are 3 red skittles left in a
bag with a total of 20 skittles left
in it. The probability that you will
get a red one when you reach in is:
3/20.
(Click to make the man eat the
candy)
But what are your chances of
getting a red one if you reach in
again? There are now 19 candies in
the bag, and only two are red.
The probability is 2/19.
Sometimes one event can
affect the outcome of
another event.
Taking the first candy affected
the outcome of the next attempt.
The two events are dependent.
*
The two events do not
affect each other.
They are independent
Now you know that the
probability of heads landing up
when you flip a coin is 1/2.
What is the probability of
getting tails if you flip it again?
It is still 1/2.
Flipping heads on one flip and
tails on another have nothing to
do with each other. They do not
affect each other at all!
Dependent
I
completely
DEPEND
on you!
I am INDEPENDENT!
What I do affects
nothing and nothing
affects me!
Independent?
Example- There are 6 beads in a bag, 3 are red, 2 are yellow and 1
is blue. What is the probability of picking a yellow and without
replacing it, next choosing a red??
On your paper, name as independent or dependent and then
determine the probability.
Remember first outcome multiplied by second outcome.
*
Dependent
Example- You throw 2 dice. What is the probability that both are 6's?
On your paper, name as independent or dependent and then determine the
probability.
Remember first outcome multiplied by second outcome.
*
* There is a one in six chance
of rolling a six on dice A and
a 1 in six chance of rolling a
6 in dice B.
F
D
1/36
.027
P
2.7 %
* 1/6
x 1/6 = 1/36
*
6.16 Probability PPT Practice
Name
Date
(Simplify the fractions)
I or D
1.
2.
3.
4.
5.
*
F
D
P
F
D
P
F
D
P
F
D
P
F
D
P
*
The game show contestant
spins a spinner with the
letters M, O, N, E, and Y.
What is the probability that
the spinner will stop on the
letter N on the first spin and
an O the second spin?
*
The names of 6 boys and 9 girls
from your class are put into a hat.
What is the probability that the
first two names chosen (without
putting the first name back in the
hat) will both be boys?
*
A box contains 2 green marbles, 3
blue marbles and 1 silver marble, 2
yellow marbles, and 2 pink marbles.
Without looking, what is
the probability that the first two
picked will both be blue?
*
You are about to attack a dragon in
a role playing game. You will throw
two dice, one numbered 1 to 6 and
the other with the letters A through
F. What is the probability that you
will roll the values 3 and E?
*
There are 3 black cats and 2
gray cats in a cage, and none
of them want to be in there.
The cage door opens briefly
and two cats escape. What is
the probability that both
escaped cats are black?