Activity 3: Solving Probability

Students were asked whether they liked to sing or dance. 50% of the students said they liked to sing. 12% claimed they liked to sing and dance. 38% claimed they liked to dance.

QUESTION: What percent of the students liked to sing?

• The percentage of the students who like to sing is 50.

• The percentage of the students who like to sing is 50/100.

• The percentage of the students who like to sing is 1/2.

• The percentage of the students who like to sing is 50%.

Students were asked whether they liked to sing or dance. 50% of the students said they liked to sing. 12% claimed they liked to sing and dance. 38% claimed they liked to dance.

QUESTION: What percent of the students liked to dance?

• The percentage of the students who like to dance is 38.

• The percentage of the students who like to dance is 38/100%.

• The percentage of the students who like to dance is 38/100.

• The percentage of the students who like to dance is 3.8.

Tags

CCSS.6.RP.A.3C

Students were asked whether they liked to sing or dance. 50% of the students said they liked to sing. 12% claimed they liked to sing and dance. 38% claimed they liked to dance.

QUESTION: If a student is picked at random, what is the probability that he or she only liked to dance?

• The probability that he or she only likes to dance is 19/100.

• The probability that he or she only likes to dance is 11/50.

• The probability that he or she only likes to dance is 19/75.

• The probability that he or she only likes to dance is 11/25.

Tags

CCSS.HSS.CP.B.7

A circle is divided into 12 equal parts to form a spinner and numbered as shown.

QUESTION: Write down the sample space.

A circle is divided into 12 equal parts to form a spinner and numbered as shown.

QUESTION: What is the total number of possible outcomes?

A circle is divided into 12 equal parts to form a spinner and numbered as shown.

QUESTION: What is the probability that when the pointer is spun it will stop at a "9"?

Tags

CCSS.7.SP.C.7A

A circle is divided into 12 equal parts to form a spinner and numbered as shown.

QUESTION: What is the probability that when the pointer is spun it will stop at a prime number?

Tags

CCSS.7.SP.C.7B

Nine identical cards are labeled 8 - 16 and placed in a box.

QUESTION: What is the sample space?

Nine identical cards are labeled 8 - 16 and placed in a box.

QUESTION: What is the total number of possible outcomes.?

Nine identical cards are labeled 8 - 16 and placed in a box.

QUESTION: What is the probability that a card drawn at random has the number 1 on it?

• 7/9

• 1/9

• 2/9

• 9/9

Tags

CCSS.7.SP.C.7B