Consider the variable x Time required for a college student to complete a standardized exam Suppose that for the population of students at a particular university the distribution approximated by a normal curve with mean 55 minutes and standard deviation 5 minutes Round your answers to four decimal places LUSE SALT a If 60 minutes is allowed for the exam what proportion of students at this university would be unable to finish in the allotted time b How much time in minutes should be allowed for the exam if you wanted 90 of the students taking the test to be able to finish in the allotted time min c How much time in minutes is required for the fastest 20 of all students to complete the exam min Submit Answer