05/06 Compound Probability T4 Participation Assignment

Use for questions 1-3: There are 9 red markers, 5 blue markers, 14 yellow markers, and 8 green markers in a pencil box. A marker is chosen at random, replaced, then another is chosen. Find each probability. 1. P(yellow, then red)

• 14/36 × 9/36 = 126/1296 = 7/72

• 9/36 × 14/36 = 126/1296 = 7/72

• 14/36 × 8/36 = 112/1296 = 7/81

• 5/36 × 9/36 = 45/1296 = 5/144

Use for questions 1-3: There are 9 red markers, 5 blue markers, 14 yellow markers, and 8 green markers in a pencil box. A marker is chosen at random, replaced, then another is chosen. Find each probability. 2. P(blue, then green)

• 5/162

• 5/36

• 7/162

• 8/33

Use for questions 1-3: There are 9 red markers, 5 blue markers, 14 yellow markers, and 8 green markers in a pencil box. A marker is chosen at random, replaced, then another is chosen. Find each probability. 3. P(both red)

The spinner below is spun twice. Find each probability. 4. P(diamond, then circle)

• 4/16 × 4/16 = 16/256 = 1/16

• 2/12 × 3/12 = 6/144 = 1/24

• 3/12 × 3/12 = 9/144 = 3/36

• 2/12 × 2/12 = 4/144 = 1/36

The spinner below is spun twice. Find each probability. 5. P(both not stars)

• 2/12 × 2/12 = 4/144 = 1/36

• 12/16 × 12/16 = 144/256 = 9/16

• 1/12 × 1/12 = 1/144

• 2/12 × 3/12 = 6/144 = 1/24

The spinner below is spun twice. Find each probability. 6. P(shaded, then heart)

The spinner below is spun twice. Find each probability. 7. P(both unshaded)

• 2/12 × 2/12 = 4/144 = 1/36

• 2/12 × 10/12 = 20/144 = 5/36

• 10/12 × 10/12 = 100/144 = 25/36

• 6/16 × 6/16 = 36/256 = 9/64

A bag contains 20 slips of paper, individually numbered 1-20. If a slip of paper and a letter in the word PENNSYLVANIA is chosen at random, find each probability. 8. P(less than 15, then a vowel)

A bag contains 20 slips of paper, individually numbered 1-20. If a slip of paper and a letter in the word PENNSYLVANIA is chosen at random, find each probability.9. P(multiple of 4, then V)

Bella guessed on the last three questions on her science test. If each question has five answer choices, what is the probability she got all three correct?

• 1/125

• 1/25

• 3/125

• 1/15