2. [12 marks] 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. [10]

R language used in this unit (b) Can the conclusion from part (a) be generalised to all of the Australian adult population? Explain why or why not.