4.01 WarmUP - Simple Probabilities

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What is probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Tags

CCSS.7.SP.C.5

Front

What is a simple probability?

Back

Simple probability refers to the probability of a single event occurring.

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CCSS.7.SP.C.7A

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How do you calculate the probability of an event?

Back

Probability = (Number of favorable outcomes) / (Total number of possible outcomes).

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CCSS.7.SP.C.7A

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What is the probability of rolling an even number on a 12-sided die?

Back

There are 6 even numbers (2, 4, 6, 8, 10, 12) out of 12 total numbers, so the probability is 6/12 = 1/2.

Tags

CCSS.7.SP.C.7B

Front

If a number is randomly selected from 0-10, what is the probability it is greater than 5?

Back

There are 5 numbers greater than 5 (6, 7, 8, 9, 10) out of 11 total numbers, so the probability is 5/11.

Tags

CCSS.7.SP.C.7B

Front

What is the probability of selecting a marble that is not green from a jar with 20 marbles, 10 of which are green?

Back

There are 10 marbles that are not green, so the probability is 10/20 = 1/2.

Tags

CCSS.7.SP.C.7B

Front

What is the probability of landing on a specific number (e.g., 3) on an 8-sided die?

Back

There is 1 favorable outcome (landing on 3) out of 8 total outcomes, so the probability is 1/8.

Tags

CCSS.7.SP.C.7A

Front

What is the probability of selecting an orange candy if all candies are orange?

Back

The probability is 100% or 1, since all candies are orange.

Tags

CCSS.7.SP.C.5

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What does it mean if an event has a probability of 0?

Back

It means the event is impossible and will not occur.

Tags

CCSS.7.SP.C.5

Front

What does it mean if an event has a probability of 1?

Back

It means the event is certain to occur.

Tags

CCSS.7.SP.C.5