How many people use the internet to obtain health information? In a survey of 1790 randomly selected adult Australian internet users, 1553 said that they obtain such information using the internet.

(a) Use these results to evaluate the evidence that at least 85% of adult Australian internet users get health information from the internet. Assume = 1%, use a P-value approach, and include all relevant steps of a formal hypothesis test.

(b) Can the conclusion from part (a) be generalised to all of the Australian adult population? Explain why or why not.