Each question part is worth 4 points unless otherwise stated. Show your work where appropriate! If a question requires an answer to a previous part and you don't know that part, guess at the value(s)Each question part is worth 4 points unless otherwise stated. Show your work where appropriate! If a question requires an answer to a previous part and you don't know that part, guess at the value(s)a research company sampled 450 american and 33% of those sampled exercised regularly. based on the sample, they calculated the 95% confidence internal 33%+-4%