Question 1

Probabilities are expressed as:&#10;A)cardinal numbers&#10;B)whole numbers&#10;C)percentages&#10;D)proportions

Accepted Answer

Probabilities are expressed as proportions, which are ratios of the favorable outcomes to the total number of possible outcomes. For example, if the probability of rolling a 6 on a fair dice is 1/6, then the proportion is 1:6, or 0.1667 as a decimal. Other expressions of probability, such as percentages and odds, are derived from proportions.

Question 2

What does probability refer to?&#10;A)a non-random event&#10;B)a sure thing&#10;C)an event in time characterized by the presence of unlikely phenomena&#10;D)the chance of something occurring

Accepted Answer

Probability refers to the chance or likelihood of something occurring.

Question 3

If you wanted to calculate the probability of a unique event,you could divide the number of favorable outcomes by:&#10;A)the reciprocal of all possible outcomes&#10;B)the total number of times the unique event occurs&#10;C)the total number of outcomes&#10;D)you wouldn't divide,you would multiply the event by the number of times it occurs

Accepted Answer

The probability of an event is calculated by dividing the number of favorable outcomes by the total number of outcomes. This gives the probability of the event occurring out of all possible outcomes. Therefore, the best choice is to divide the number of favorable outcomes by the total number of outcomes, which is represented by choice C.

Deck 24: Addendum Probability