The life expectancy of a circulating coin is years. The life expectancy of a circulating dollar bill is only 1/20 as long. Find the life expectancy of circulating paper money.

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.

Describe a situation where it would be beneficial to round decimals to the nearest dollar. explain why you would use rounding in that situation.

True or false? the sum of the differences (% - 7) is never zero for any distribution consisting of n observations.