Warm Up. Solve each Proportion:. Write each fraction as a Decimal and a percent:. 1). X=9. 4). .95; 95%. .62; 62%. 2). X=43.75. 5). 1.1; 110%. 3). X=10.5. 6). Lesson 12.1. SSS: M.A.A.1.3.3 M.A.E.2.3.2. Probability. Vocabulary: Outcome, event,
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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Write each fraction as a
Decimal and a percent:
SSS: M.A.A.1.3.3 M.A.E.2.3.2
Vocabulary: Outcome, event,
Theoretical probability, complement,
Odds in favor, odds against
For example: 6 is a possible outcome when a number cube is rolled once.
An event is an outcome or a group of outcomes.
If all outcomes are equally likely, you can use
A formula to find the theoretical probability.
theoretical probability = p(event) =
the following letters: A B C D E
Find the probability that you select a vowel.
Express the probability as a fraction, decimal, and a percent.
The event vowel has 2 favorable outcomes,
And there are 5 possible outcomes…so…
= .4 = 40%
*Now you find P(consonant)
Don’t forget to express the probability as a fraction, decimal,
and a percent.
= .6 = 60%
Probability of rolling a 7 on a number cube
is 0, because it is an impossible event. The
Probability of rolling a number less than 7 is
1, because it is a certain event.
Find the following probabilities if you roll a number cube once.
P(multiple of 3)
P(multiple of 8)
outcomes not contained in the event. The
Probability of the compliment of an event is
Written P(not event).
*An event plus its compliment will always equal 1, because it will
always be certain.
For Example: Earlier we found the probability of selecting a Vowel/Consonant from the letters: A B C D E
P(vowel) = .4 P(consonant) = .6
Using the compliment we can say P(vowel) + P(not vowel)
.4 + .6 = 1
Find the following:
(You roll a standard number cube once.)
P(not multiple of 3)
Odds in favorof an event = the ratio of the
number of favorable outcomes to the number
of unfavorable outcomes
Odds against an event = the ratio of the
number of unfavorable outcomes to the number
of favorable outcomes
Find the odds that a ball chosen at random
will be blue.
Find the odds against choosing a black
A bag contains an unknown number of marbles.
You know that P(red)= and P(green)=
a. Are all the marbles in the bag red or green? Explain.
We know that out of every 4 marbles in the bag, 1 is
red and 1 is green. So we also know that out of every
4 marbles 2 are a color other than red or green.
How many marbles in total might be in the bag?
It can be any positive integer that is divisible by four.
We know this because we were told that one-fourth
of the number is either red or green.