There are 48 students in an elementary statistics class On

Last updated: 4/19/2023

There are 48 students in an elementary statistics class On the basis of years of experience the instructor knows that the time needed to grade a randomly chosen first examination paper is a rando variable with an expected value of 5 min and a standard deviation of 4 min Round your answers to four decimal places LAUSE SALT a If grading times are independent and the instructor begins grading at 6 50 P M and grades continuously what is the approximate probability that he is through grading before the 11 00 PM TV news begins b If the sports report begins at 11 10 what is the probability that he misses part of the report if he waits until grading is done before turning on the TV You may need to use the appropriate table in the Appendix of Tables to answer this question