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Worksheets

Probability

Total questions: 15

Worksheet time: 4hrs 45mins

Name
Class
Date
1.

If a coin is tossed 10 times and a head appears 3 times. Find the experimental probability of getting a head as a decimal.

a)

0.3

b)

30

c)

30%

d)

0.03

2.

The given table shows the outcome when a coin is tossed 5 times. Find the experimental probability of getting a head as a decimal.

a)

1.67

b)

0.4

c)

2.5

d)

0.6

3.

From the spinner shown, what is the probability of spinning a green or a red?

a)

5/12

b)

8/12

c)

3/12

d)

15/144

4.

Sandy plans on choosing 3 cards from a standard deck of cards, not replacing them each time. What is the probability of her choosing 3 Aces?

a)

0.019%

b)

0.0002%

c)

0.01%

d)

0.018%

5.

Chris has a bag of marbles. In the bag he has 8 blue marbles, 3 red, 5 pink, and 1 yellow. Chris plans on picking 3 marbles out of the bag, replacing them each time. What is the probability that he will choose 2 pink marbles and 1 blue?

a)

4.1%

b)

29%

c)

3.7%

d)

5.9%

6.

A four coloured spinner is spun 50 times. The experimental probability of spinning a red was 0.6. How many times was a red spun?

a)

3

b)

12

c)

50

d)

30

7.

If a dice is rolled 500 times and a 3 appears 313 times. What will be the experimental probability of a 3 being rolled as a percent?

a)

6.26%

b)

0.9%

c)

62.6%

d)

0.6%

8.

Andy flipped a coin and obtained a tails 18 times. He calculated the experimental probability of flipping a tails to be 0.3. How many trials did he conduct?

a)

54

b)

60

c)

18

d)

0.0167

9.

Chris has a bag of marbles. In the bag he has 8 blue marbles, 3 red, 5 pink, and 1 yellow. Chris plans on picking 2 marbles out of the bag, replacing them each time. What is the probability of getting a yellow marble and then a red marble?

a)

18%

b)

6%

c)

7%

d)

1%

10.

From the spinner shown, what is the probability of not spinning a red?

a)

1/12

b)

5/12

c)

3/12

d)

7/12

11.

Susan conducted an experiment and chose a 10 of hearts from a deck of cards 8 times. She calculated the experimental probability of choosing a 10 of hearts to be 0.25. How many trials did she conduct?

a)

2

b)

32

c)

8

d)

0.03125

12.

A coin is tossed and a dice is rolled 6 times simultaneously. What is the experimental probability of getting a head and a 5 together as a decimal.

a)

0.167

b)

0.5

c)

0.33

d)

0.34

13.

What is the probability of rolling a die twice and obtaining an odd number and then an even number?

a)

15%

b)

50%

c)

75%

d)

25%

14.

Terry has a bag of marbles. In the bag he has 8 blue marbles, 3 red, 5 pink, and 1 yellow. Chris plans on picking 2 marbles out of the bag, not replacing them each time. What is the probability of getting a pink marble and then a blue marble?

a)

29%

b)

14.7%

c)

13.8%

d)

47%

15.

From the spinner shown, what is the probability of spinning a blue and then a yellow?

a)

2.08%

b)

25%

c)

33.3%

d)

30%