Please answer this,

Q4. Giulia is about to meet Jack for the second time. Last time she met Jack, she forgot to ask him where he's from, and now she's too embarrassed to ask. She knows that he is either from Australia or New Zealand though, and she can correctly distinguish these accents 70% of the time. Based purely on the sound of his accent. Giulia would have guessed that lack is Australian. Giulia also knows that Australia has a population of about 25 million while New Zealand only has about 5 million. She met Jack in Scotland, and she guesses that within Scotland, the reiative amounts of Australians and New Zealanders are proportional to the ratio of their home country populations. Assuming that Giulia only has her ability to distinguish accents, her geographic knowledge, and her reasoning skills to go on. (a) What probability should Guilia assign to .lack being Australian? (bl What probability would she have assigned to being Australian if she'd thought his accent sounded New Zealandish instead? it) How would these probabilities be different if she had met Jack In New York, or Sydney, or Auckland instead of in Scotland