Use critical thinking to determine whether the sampling method appears to be sound or is flawed.

1) An airline company advertises that 100% of their flights are on time after checking 5 randomly selected flights and finding that these 5 were on time. What is wrong with their claim?

SHORT ANSWER.Write the word or phrase that best completes each statement or answers the question.

Find the indicated complement.

2) If a person is randomly selected, find the probability that his or her birthday is not in May. Ignore leap years.

Find the indicated probability. Round to the nearest thousandth.

3) A study conducted at a certain college shows that 57% of the school's graduates find a job in their chosen field within a year after graduation. Find the probability that among 9 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating.