Probability

1
Probability
COURSE 3 LESSON 6-9
There are 3 red, 2 green, 5 yellow, and 1 blue
marker pens in a box. Suppose you choose one at
random. Find these probabilities.
a. P (yellow)
b. P (brown)
The probability of choosing a brown marker pen is
0.
6-9
2
Probability
COURSE 3 LESSON 6-9
The probability of a certain person making a
basket from the center line of a basketball court
is 1 out of 1,200. Express this probability as a
percent. Round to the nearest thousandth of a
percent.
The probability of the person making the basket
is about 0.083.
6-9
3
Probability
COURSE 3 LESSON 6-9
In a survey of the class, 13 of the students
prefer vanilla, 27 prefer chocolate, 10 prefer
strawberry, and the rest chose other flavors of
ice cream. Find the probability that a student
randomly selected from the class chose vanilla or
chocolate.
13 of the students chose vanilla, and 27 of the
students chose chocolate.
P(vanilla or chocolate) P(vanilla)
P(chocolate)
The probability that the student chose vanilla or
chocolate is 40.
6-9