Probability Quest Test
Probability Quest
Middle School Math Assessment
Name:
Date:
INSTRUCTIONS: Analyze each probability scenario carefully. Choose the best answer from the multiple-choice options. Show your work in the margins for extra credit consideration!
1
You roll a standard number cube. What are all the possible outcomes?
A 1, 2, 3, 4, 5, 6
B 1, 3, 5
C 2, 4, 6
D 0, 1, 2, 3, 4, 5, 6
2
What are the favorable outcomes of rolling an even number on a cube?
A 1, 2, 3
B 2, 4, 6
C 1, 3, 5
D 2, 4, 5
3
What are the favorable outcomes of rolling a number greater than 5?
A 4, 5, 6
B 5, 6
C 6
D None
4
Prob. of landing a snowboard jump is 1/2. Describe the likelihood.
A Impossible
B Unlikely
C Equally likely
D Likely
5
100% chance temp < 120°F tomorrow. Describe the likelihood.
A Likely
B Certain
C Unlikely
D Equally likely
6
Roll a number cube once. What is the probability of rolling an odd number?
A 1/6
B 1/3
C 1/2
D 2/3
7
Prob. of drawing a short straw is 3/20. In 40 straws, how many are short?
A 4
B 6
C 15
D 34
8
In 50 rolls, an odd was rolled 29 times. Find the experimental probability.
A 50%
B 58%
C 29%
D 60%
9
It rains 2 out of 12 days in March. Expected rainy days in April (30 days)?
A 2 days
B 5 days
C 6 days
D 10 days
10
Inspector finds 5 defective in 200. Expected in 5,000 jeans?
A 100
B 125
C 250
D 500
11
Set {E, L, X, O, P, E, R}. Theoretical probability of a vowel?
A 2/7
B 3/7
C 1/2
D 4/7
12
Bobblehead prob. is 1/6. 3 winners. Total sections on wheel?
A 6
B 12
C 18
D 24
13
A shop offers 2 crusts and 4 styles. How many different pizzas?
A 6
B 8
C 12
D 16
14
Add "Deep Dish" (making 3 crusts, 4 styles). Total pizzas now?
A 7
B 10
C 12
D 15
15
Prob. of rolling a number > 4 AND flipping tails on a coin?
&
A 1/6
B 1/4
C 1/12
D 1/3
16
Flip 3 nickels. Probability of exactly two heads, one tail?
A 1/8
B 1/4
C 3/8
D 1/2
17
Prob. of rolling at most 4 AND flipping heads on a coin?
&
A 1/3
B 1/4
C 1/6
D 2/3
18
Flip 3 nickels. Prob. of flipping at least two tails?
A 1/8
B 3/8
C 1/2
D 5/8
19
Roll two number cubes. Prob. of rolling double threes?
&
A 1/6
B 1/12
C 1/36
D 1/18
20
Prob. of choosing a stuffed crust Hawaiian pizza (2x4 menu)?
A 1/4
B 1/8
C 1/2
D 1/6
21
Spin a 5-sec spinner (1-5) and flip a coin. Prob. prime AND tails?
&
A 3/10
B 1/5
C 1/2
D 2/5
22
Prob. spin a mult. of 2 (1-5) AND flip heads on a coin?
&
A 1/10
B 1/5
C 2/5
D 1/2
23
You want to estimate students who ride the bus. Which sample is unbiased?
A 4 students
B Band members
C 50 seniors
D Lunch random
24
Which of these best describes a biased sample?
A Representative
B Randomly selected
C Favored parts
D Large enough
25
To estimate 8th graders who listen to music, which is an unbiased sample?
A Band members
B Alphabetical list
C Concert students
D Friends
26
Candidate A mean is 84s. B mean is 58s. What is the difference in means?
A 15 seconds
B 26 seconds
C 42 seconds
D 142 seconds
27
Candidate A MAD is 16. B MAD is 15. What can you conclude about variation?
A Higher for A
B Higher for B
C About the same
D Unknown
28
Difference in means is 26 and MAD is 16. Express the diff as multiple of MAD.
A 1.0
B 1.6
C 2.6
D 0.6
29
What is the numerical probability of an "Impossible" event on the scale?
A 0
B 0.5
C 1
D 100%
30
What is the numerical probability of a "Likely" event on the scale?
A 0.25
B 0.50
C 0.75
D 1.0
End of Assessment • Check your work!
