An online newspaper conducted a survey by asking, "do you susport the lowering of air quality standards if it could cause the death of millions of innocent people from pollution related diseases? " determine the type of bias.

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?