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PROBABILITY
Test Description: TRIAL
Instructions: Answer all questions to get your test result.
1) A die is rolled; find the probability of getting an odd number.
A
6
B
0.5
C
3
D
5
2) A die is rolled; find the probability of getting an even number
A
0.5
B
3
C
5
D
6
3) Sally puts tickets numbered 1–100 into a bag. She picks one out at random. Say which word from the list above you would use to describe each of the following events. The number is 0.
A
Impossible
B
Unlikely
C
An evens chance
D
Certain
4) Sally puts tickets numbered 1–100 into a bag. She picks one out at random. Say which word from the list above you would use to describe each of the following events. a) The number is less than 90.
A
An evens chance
B
certain
C
Likely
D
imposible
5) The probability of a football team winning a game is 0.3. What is the probability that they will not win the game?
A
0.7
B
1
C
4
D
0.3
6) There is a 45% chance of snow tonight. What is the probability that it will not snow?
A
45%
B
30%
C
100%
D
55%
7) A scientist checks some trees to see whether they are infected with a disease. She checks 28 trees, and 5 of them are infected. Estimate the probability that a tree chosen at random has the disease.
A
2
B
0,12
C
0.53
D
0.66
8) Clive is bored and is throwing rolled-up balls of paper at the recycling bin. He decides to fi nd the probability of a ball landing in the bin. He carries out an experiment. He has 20 throws. Five balls land in the bin.
A
25%
B
non one
C
5%
D
20%
9) Calculate these probabilities. Give your answers as fractions. a A jar contains six green marbles and nine blue marbles.A marble is picked at random.What is the probability it will be green?
A
9/15
B
15/15
C
6/15
D
4/15
10) You roll a dice. What is the probability of rolling anumber greater than 4? Give your answers as fractions.
A
4/6
B
non one
C
3/6
D
2/6
*select an answer for all questions
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