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Hi, Apologies if this is a basic question but when constructing a confidence interval do you only ever use the critical/lookup T values? I also have the Schweser notes which suggests sometimes you'd use the Z-statistic as opposed to the T statistic: Thanks, Tom

Hi, in the videos it says these topics have a low likelihood of appearing in the exam in 2013, is this still the case for Nov 2017? Thanks, Tom