What Do You Expect?
Grade:
Subject:
8th
Investigation 1 Review
1
A clothing store sells shirts in three sizes: small, medium, and large. The shirts come with buttons or snaps. The colors available are blue or beige.
1
How many events are represented in this situation?
2
A clothing store sells shirts in three sizes: small, medium, and large. The shirts come with buttons or snaps. The colors available are blue or beige.
2
2
How many possible outcomes are in this situation?
3
A
model 1
B
C
A computer store sells 4 models of a computer. Each model can be fitted with one of 3 sizes of hard drive.
3
model 2
How many events are represented in this situation?
model 4
model 3
4
A
B
C
A computer store sells 4 models of a computer. Each model can be fitted with one of 3 sizes of hard drive.
model 1
4
model 2
What is the probability of choosing a computer with a size C hard drive?
model 4
model 3
5
A
B
C
A computer store sells 4 models of a computer. Each model can be fitted with one of 3 sizes of hard drive.
model 1
5
What is the probability of choosing a model 2 computer with a size A hard drive at random?
model 2
model 4
model 3
6
The table to the right shows the results of spinning a spinner 15 times. Find the experimental probability of . . .
6
P(red)
7
The table to the right shows the results of spinning a spinner 15 times. Find the experimental probability of . . .
7 7 P(yellow)
8
The table to the right shows the results of spinning a spinner 15 times. Find the experimental probability of . . .
8 8 P(green)
9
There are eight blue marbles, nine orange marbles, and six yellow marbles in a bag. You draw a marble. Find the probability. . .
9
P(orange marble)
10
There are eight blue marbles, nine orange marbles, and six yellow marbles in a bag. You draw a marble. Find the probability. . .
10 P(yellow marble)
10
11
There are eight blue marbles, nine orange marbles, and six yellow marbles in a bag. True
or
False
1111 Removing a blue marble from the bag will make the probability of drawing a blue marble 1/3.
12
12 How many events are being represented?
red
red
blue
1
2
1
2
green
1
green
red
yellow
red
green
yellow
green
red
yellow
red
green
yellow
green red
2
1
red
yellow
2
yellow
green
red
yellow
green
red
yellow
green
13
13 How many possible outcomes are there?
red
red
blue
1
2
1
2
green
1
green
red
yellow
red
green
yellow
green
red
yellow
red
green
yellow
green red
2
1
red
yellow
2
yellow
green
red
yellow
green
red
yellow
green
14
True
or
False
14 Each outcome is equally likely.
red
blue
red
1
2
1
2
green
1
green
red
yellow
red
green
yellow
green
red
yellow
red
green
yellow
green red
2
1
red
yellow
2
yellow
green
red
yellow
green
red
yellow
green
15
15 How many outcomes are possible in this situation?
16
The school carnival has the game Making Purple. 16 Using the spinners on the left, what is the probability of making purple?
17
The school carnival charges 50 cents for carney tickets. The game Making Purple, charges two tickets. 17 If two hundred people play the Making Purple game how much money should they expect to bring in?
18
18 If two hundred people play the Making Purple game how many people would be expected to win?
19
19 If the winners of the Making Purple game make $5 how much money would the school expect to pay out?
20
20 What is the expected profit of the Making Purple game?
21
22
23