MMA 81705

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MMA 8/17/05

• Bellwork rules quiz
• Check Quiz
• N1-2 Intro to Probability
• A1-2 HomeWork

Objective Students will calculate the
probability of given events.
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Notes 1-2 Introduction to Probability (Table
Method 1) List all possible outcomes for the
random experiment of rolling two fair die.
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(No Transcript)
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(Tree Method) List all possible outcomes for the
random experiment of flipping two coins.
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(Table Method 2) Find all possible outcomes
for the random experiment of drawing a card out
of a standard deck of 52.
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Number of
outcomes in the event Probability of an Event
--------------------------------------------
Number of
outcomes in the sample space

• n(E)
• P(E) -----------
• n(S)
• Examples
• A pair of dice is rolled, one green and one red.
  Find the probability of the following (write as a
  fraction)
• the total is 5____________
• the total is less than 5___________
• the total is at least 9 ____________
• A card is drawn at random from a normal 52-card
  deck (write as a decimal rounded to nearest
  hundredth)
• find P(red card) ____________
• find P(7 or 8) __________
• find P(red or black) ___________
• A penny and a quarter are flipped at the same
  time (write as a percentage).
• find P(both are H) ___________
• find P(the penny is H, the quarter is T)
  ____________