January 26, 2010
Random - an event in which every outcome has an equal chance of occuring.
For example : flipping a coin
spinning a spinner with four equal size options
rolling a die
selecting a card
Not everything in the world is random so there must be something that is not random. Like spinning a spinner with four unequal size options.
In 12 spins, it should land on blue 6 times, red 3 times and blue 3 times.Goldilocks sits on 3 chairs and eats porridge. How many possible outcomes.
9 possible outcomes. 1/9 1:9 11%Does Goldilocks choose the chair and porridge a random? Explain.
No because she has choice and preference.
P(just right chair and just right porridge) 9/9 9:9 100% because she has a choice
A marble is randomly selected from a bag that contains a red, blue, and 1 green marble. Then a 4 sided die is rolled.
A)Create a table to show the sample space
B) What is the probability of choosing any colour and rolling any number but 3?9/12 3/4 75% 3:4
C) What is P (blue or green, a number greater than 1) 6/12 1/2 1:2 50%
D)P(black, 1) 0/12 0% 0:12 <------ impossible event.
E) P (red, blue, or green, and die displays 4) 3/12 1/4 1:4 25%
H.W.
A 4 sided die labled 1,2,3,4 a spinner divided into 5 equal parts: fly, swim, hop, glide, and walk.
a) create a table to show the sample space.
b)what is P(3,swim)
c) what is P(odd #, hop)
Hope you enjoyed reading my scribe! If I didn't help you at all, go to Mr. Isfeld at math help.
