Simple Probability and Complement and Sample Space

A set of all possible outcomes is known as - 

• list

• complement

• sample space

• event

How do we determine which event is most likely to occur?

• The event has the closest improper fraction to 1

• The event has the closest proper fraction to 1/2

• The event has the closest proper fraction to 0

• The event has the closest proper fraction to 1

In probability theory, the sum of an event (A) occurring and the same event NOT occurring (not A) is always - 

• 0

• based on the sample space

• variable

• 1

If a coin is tossed 3 times, how many possible outcomes are in the sample space?

• 6

• 8

• 3

• It depends

Which of the following methods is NOT a good tool for determining sample space?

• tree diagrams

• area models

• organized lists

• guess and check

A measurement of the likelihood of an event or events occurring on a scale of 0 to 1 is called - 

• data

• luck

• probability

• trials

The probability of an event occurring, P(A), can be expressed as a fraction, decimal, or percent.

• True

• False

Which of the following expressions can be used to calculate the probability of two related events occurring?

• P(event) x 2

• P(event 1) +   P(event 2)

• P(event 1) x     P(event 2)

• P(event 1 + 2)

Which of the following will correctly complete the following statement. Probability, when written as a fraction, will . . .

• never be equal to zero

• sometimes be greater than 1

• always be from 0 to 1

• will never be equal to 1

A number that indicates the likelihood of an outcome happening is the definition of ___.

• outcome

• probability

• sample space

• experiment