bmaggie

If the probability of an event is 0.20, what are the odds against the event occurring?

A) One to four.

B) Four to one.

C) Five to one.

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The answer can be determined by dividing the probability of the event by the probability that it will not occur: (1/5) / (4/5) = 1 to 4. The probability against the event occurring is four to one, i.e. in five occurrences of the event, it is expected that it will occur once and not occur four times.

bmaggie

A company has two machines that produce widgets. An older machine produces 16% defective widgets, while the new machine produces only 8% defective widgets. In addition, the new machine employs a superior production process such that it produces three times as many widgets as the older machine does. Given that a widget was produced by the new machine, what is the probability it is NOT defective?

A) 0.92.

B) 0.76.

C) 0.06.

bmaggie

If the probability of an event is 0.10, what are the odds for the event occurring?

A) One to nine.

B) One to ten.

C) Nine to one.

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The answer can be determined by dividing the probability of the event by the probability that it will not occur: (1/10) / (9/10) = 1 to 9. The probability of the event occurring is one to nine, i.e. in ten occurrences of the event, it is expected that it will occur once and not occur nine times.