1 / 14

Probability

Probability. Probability of an Event…. Example…. What is the probability of rolling a “3” on a six sided die?. Answer…… There is one “3” on a die and there are six sides. Example……. Use the figure to the right. Suppose you throw a dart without looking where it lands on the dart board.

lori
Download Presentation

Probability

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Probability

  2. Probability of an Event…..

  3. Example….. • What is the probability of rolling a “3” on a six sided die? • Answer…… • There is one “3” on a die and there are six sides.

  4. Example…… • Use the figure to the right. Suppose you throw a dart without looking where it lands on the dart board. • What is the probability that it will land on a shaded square?

  5. Answer…… • There are 8 shaded squares. • There are 20 total squares.

  6. Example…… • What is the probability that it will NOT land on a shaded square? • Answer…… • There are (20-8) or 12 unshaded squares.

  7. Example…… • What is the probability of selecting a queen out of a standard deck of 52 cards? • Answer…… • There are 4 queens in the deck. • There are 52 cards in the deck.

  8. Example…… • An urn contains 3 blue balls, 5 red balls, and 2 orange balls. • A. Find • Find • Find • Answers…… A. B. C.

  9. Fundamental Counting Principle…. • If one event can occur “m” ways and a second event can occur “n” ways, then total number of ways both events can occur is

  10. Example…… • Katie has 2 pairs of pants, 4 shirts, and 3 pairs of shoes that can all match up and make an outfit. • How many different outfits can Katie make? • Answer….. • (2)(4)(3) = 24

  11. Example…… • An urn contains 3 red and 5 blue marbles. Find the probability of selecting 2 blue marbles in a row if you do not replace the 1st one after it is selected. • Answer…… • You have 5 BLUE marbles. • You have 8 TOTAL marbles.

  12. Example: Titanic P(3rdclass) P(survived) P(1stclass) P(died)

  13. Example…… • A single card is drawn from a deck. • Find a. P(black ace) b. P(spade or diamond) • Answer: a. b.

  14. Worksheet….

More Related