Comparing Independent & Dependent Probabilities

You have a bowl of candy. There are 3 red, 4 blue, and 3 purple jolly ranchers.

Situation A: You pick a red, put it back and pick a purple.

Situation B: You pick a red, eat it, pick a purple.

Which has the higher chance of occurring?

• Situation A

• Situation B

Your class is made up of 30 students and 14 are boys.

Situation A: Two girls are picked to attend a meeting.

Situation B: A girl is picked to receive candy, her name is put back into the jar and another girl is picked.

Which has the higher probability?

• Situation A

• Situation B

You randomly choose a two digit number by choosing one digit at a time. (Zero cannot be the first digit.)

Situation A: You create the number 88. Numbers can repeat.

Situation B: You create the number 87. Numbers cannot repeat.

Which situation has a better chance of occurring?

• Situation A

• Situation B

Your class is picking two students out of the class. There are 12 girls and 8 boys in the class.

Situation A: You are picking teams for kickball, a girl is chosen, then a boy.

Situation B: You are randomly picking two students to win a prize. People can win twice. A girl is chosen, then a boy.

Which is more likely to occur?

• Situation A

• Situation B

Numbers 11-20 are placed in a bag.

Situation A: You pick a prime number, replace it, then pick another prime number.

Situation B: You pick an odd number, don't replace it, then pick a 12 or 14.

Which is more likely to occur?

• Situation A

• Situation B