In a recent survey, it was found that the median income of families in country A was $58,000. What is the probability that a randomly selected family has an income less than $58,000?

Suppose the probability of an IRs audit is 4.2 percent for U.S taxpayers who file form 1040 and who earned 100,000 or more.   what are the odds that such taxpayer will be audited?   what are the odds against such taxpayer being audited?

Migraine medication was administered to patients in that 12% experienced weight gain as a side effect. If a random sample of 15 patients were chosen what is the probability that exactly 4 experienced weight gain as a side effect?

A construction company wants to understand how important safety helmets are on their worksite. They find that around 73% of their workers wear safety helmets regularly. Of those who wear these helmets, only 14% report any head injuries; for those who do not wear them regularly, 52% report head injuries.  What is the probability that a person who has reported a head injury was wearing a helmet?