PROBABILITY



INTRO TO PROBABILITY NAME___________________________

Algebra II Date______________Per______

Find the probabilities of each of these events.

1. You roll a six-sided die whose sides are numbered from 1 through 6. Find the probability of:

A) rolling a 4 B) rolling an odd number C) rolling a number less than 7

D) rolling a 3 or 5 E) rolling a number greater than 2 F) rolling anything but 1

2. Suppose you choose a marble at random from a container that has 64 marbles that are identical except for color. There are 16 red ones, 20 blue ones, 8 black ones, 8 white ones, 10 green ones, and 2 yellow ones.

A) Find the P(the marble is black) B) Find the P(the marble is not red)

C) Find the P(the marble is green D) Find the P(the marble is not blue or black)

3. You have an equally likely chance of choosing any integer from 1 to 20. Find the probability of choosing:

A) an odd number B) a number less than 9 C) a perfect square

D) a prime number E) a multiple of 3 F) a factor of 120

4. A card is drawn at random from a standard 52-card deck. Find the probability of drawing:

A) the ace of hearts B) any ace C) a diamond

D) a red card E) a face card(king, queen, jack) D) a card other than 10

5. Use the sample space chart for rolling 2 dice to determine the probability for each event.

A) P(the sum is 2)

B) P(the sum is 8)

C) P(the product is 12)

D) P(the die are the same number)

|(1,1) |(2,1) |(3,1) |(4,1) |(5,1) |(6,1) |

|(1,2) |(2,2) |(3,2) |(4,2) |(5,2) |(6,2) |

|(1,3) |(2,3) |(3,3) |(4,3) |(5,3) |(6,3) |

|(1,4) |(2,4) |(3,4) |(4,4) |(5,4) |(6,4) |

|(1,5) |(2,5) |(3,5) |(4,5) |(5,5) |(6,5) |

|(1,6) |(2,6) |(3,6) |(4,6) |(5,6) |(6,6) |

E) P(that at least one number is a 3)

F) P(the sum is an integer)

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