Question: Find the probability of randomly selecting "second grader that thinks sharks are scary" P(second grader AND sharks). Write your answer as a percent.

Scary Animals!

Snakes:

First Graders: 10

Second Graders: 12

Total: 22

Alligators:

First Graders: 13

Second Graders: 10

Total: 23

Sharks:

First Graders: 15

Second Graders: 23

Total: 38

Other:

First Graders: 12

Second Graders: 5

Total: 17

Total:

First Graders: 50

Second Graders: 50

Total: 100

11 answers

The probability of randomly selecting a second grader that thinks sharks are scary is P(second grader AND sharks) = 23/100 = 0.23 or 23%.
Question: Find the probability of randomly selecting a "kid" from this list. P(Kids). Write your answer as a fraction.

Favorite Ice Cream Topping

Hot Fudge:

Kids: 2

Adults: 11

Total: 13

Rainbow Sprinkles:

Kids: 15

Adults: 19

Total: 39

M&M’s:

Kids: 18

Adults: 0

Total: 18

Other:

Kids: 10

Adults: 17

Total: 27

Total:

Kids: 45

Adults: 47

Total: 92
The probability of randomly selecting a "kid" from the list is P(Kids) = 45/92.
Question: Find the probability of randomly selecting a "green" marble from this list.
P (Green). Write your answer as a fraction in simplest form.

Marble Collection

Red:

Solid: 8

Striped: 52

Total: 60

Green:

Solid: 6

Striped: 12

Total: 18

Blue:

Solid: 12

Striped: 17

Total: 29

Total:

Solid: 26

Striped: 81

Total: 107
The probability of randomly selecting a "green" marble is P(Green) = (Solid Green + Striped Green) / Total Marbles = (6 + 12) / 107 = 18 / 107 (fraction in simplest form).
Question: Find the probability of randomly selecting a "Striped marble that is blue" from this list. P (Blue AND Striped). Write your answer as a fraction in simplest form.

Marble Collection

Red:

Solid: 8

Striped: 52

Total: 60

Green:

Solid: 6

Striped: 12

Total: 18

Blue:

Solid: 12

Striped: 17

Total: 29

Solid: 26

Striped: 81

Total: 107
The probability of selecting a "Striped marble that is blue" is P(Blue AND Striped) = (Striped Blue) / Total Marbles = 17 / 107 (fraction in simplest form).
Question: Find the probability of randomly selecting a person that prefers "hot fudge" from this list. P(Hot Fudge). Write your answer as a fraction.

Favorite Ice Cream Topping

Hot Fudge

Kids: 2

Adults: 11

Total: 13

Rainbow Sprinkles:

Kids: 15

Adults: 19

Total: 34

M&M’s:

Kids: 18

Adults: 0

Total: 18

Other:

Kids: 10

Adults: 17

Total: 27

Total:

Kids: 45

Adults: 47

Total: 92
The probability of randomly selecting a person that prefers "hot fudge" is P(Hot Fudge) = (Adults who prefer hot fudge) / Total people = 11 / 92 (fraction).
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The probability of randomly selecting a person that prefers "hot fudge" is P(Hot Fudge) = (Adults who prefer hot fudge) / Total people = 11 / 92 (fraction).