Simple Probability
Compound Probability
Making Predictions
Vocabulary
Experimental Probability
100
Lanie is buying a new kite. There are 8 blue, 12 green, and 20 red kites in the bin at the store. If each choice is equally likely, what is the theoretical probability that Lanie buys a blue kite? Write as a fraction in simplest form.
1/5
100
Daria chooses a paint color from 4 shades
of blue, 2 shades of yellow, and 4 shades of purple to paint her room. She can choose either carpet or wood flooring. If each choice is equally likely, how much greater is the probability of Daria choosing a shade of blue and carpet than the probability of her choosing a shade of yellow and wood flooring?
1/10 or 10% more
100
The probability of Marco’s mail being delivered early is 1/7. In 350 days of mail delivery, how many times can Marco expect to get his mail early?
50
100
Tyrone rolls a fair six-sided number cube, rolls it again, and then flips a fair coin.
Which outcome is part of the sample space?
A) heads, tails, heads
B) 6, 3, heads
C) 5, heads, tails
D) 1, 2, 4
B
100
Javier is at an antique car show. He records the types of cars he sees in the table. What is the experimental probability for each type of car that Javier sees at the car show?
Type - Frequency
Sedan - 35
Convertible - 7
Truck - 18
Sedan - 35/60, or 7/12
Convertible - 7/60
Truck - 18/60, or 3/10
200
A disc jockey plays a variety of music at public events. Each hour the disc jockey plays 3 hip-hop songs, 8 rock songs, 4 pop songs, and 5 country songs. What is the probability that the first song played will be a rock song written as a percent?
40%
200
Andy is getting his car washed. He can choose wash package A or B and whether to have his car vacuumed (V), waxed (W), or detailed (D). What is the sample space that represents Andy’s possible choices?
Draw the tree diagram that represents the sample space.
Mr. Gregory will draw.
200
Determine which spinner has the better chance of spinning each outcome:
Spinner 1: Spinner 2:
1) Spinning a B
2) Spinning a C
3) Spinning any letter except A
4) Spinning an E
A) Spinner 1
B) Spinner 1
C) Spinner 2
D) Spinner 2
200
During the summer semester, students have a choice of 3 history classes, 4 math classes, and 2 English classes. Each class has 5 morning start times and 4 afternoon start times. Each class and time is equally likely to be chosen. If 8100 students take one summer class, how many students would be expected to attend a math class in the morning?
A
200
(Mr. Gregory will draw the table - Red, Gray, Blue; Sedan, Truck, SUV - 12, 15, 11, 7, 9, 6, 10, 5, 15
A two-way table is shown below. What is the experimental probability of randomly selecting a red truck?
__
7/90