You may need to use the apprepriate appendix table to whuwer this question. The time needed to complete a fledi examination in a particular college course is normaly distributed with a mean of ab minutes and a standard deviatian of 10 minutes. Answer the following questions. (o) What is the probability of completing the exam in one hour or less? (Reved your answer to four docimal pleces.) (b) What is the probabilaty that a student wio complete the exam in more than 60 minutes but less than 75 minutes? (Rowind vour answer to fow decimes places) (Dround your anwer up to the nearest integer.) students