Notes For January 24,2011

1st.) Question - p(heads and tails) when flipping a regular coin.

Use a tree diagram to show the sample space.

Express the answer as a percent.

Answer:

Probability>>>

Sample space:

• (h,h) (h,t)
• (t,h) (t,t)
  

Percent: 25%

2nd.) Question- p (rolling 4 and then a 2) with a six sided die.

Express as a ratio.

Answer:

Probability>>>

6 x 6= 36 all together.

Ratio: 1:36

3rd.) Question-p ( getting red and blue in any order) when spinning this spinner twice.

Find the fraction, ratio, and percent.

Answer:

Probability>>>

Fraction: 2/16( simplified 1/8)

Ratio: 2/16, (1/8)

Percent: 12,5%

4th.) Question- Create a tree diagram to show all the possible outcomes when a coin is flipped and a spinner is spun with five equal sections labelled run, skip, jump, twirl, and twist.

(find p (heads and jump))

Answer:

Probability>>>

Fraction: 1/10

Ratio: 1:10

Percent: 10%

Random- An event which every outcome has an equal chance of occurring.

Watch this video to understand more about probability...

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