A drive-through fast-food chain obtained the following pick-up times (number of minutes between the time an order is pla
Posted: Mon Mar 21, 2022 4:24 pm
A drive-through fast-food chain obtained the following pick-up times (number of minutes between the time an order is placed and the time the order is picked up at the drive-through window). A random sample of 29 orders along with the corresponding duration is given in the accompanying table a. What is the approximate mean pick-up time? b. What is the approximate variance and standard deviation? Number of Minutes, 2<4 4<6 Number of Orders, 10 8 7 4 60 B<10