A research center poll showed that 77 of people believe that

A research center poll showed that 77% of people believe that it is morally wrong to not report ail income on tax returns. What is the probability that someone does not have this belief? The probability that someone does not believe that it is morally wrong to not report all income on tax returns is

Solution

Note that the probability of the complement of an event is given by

P(not A) = 1 - P(A)

Thus, if P(A) = 0.77,

P(not A) = 1 - 0.77 = 0.23 [ANSWER]