Benny wants to make cupcakes. To make cupcakes he needs 1/6 of a cup of flour per batch of cupcakes . If Benny has 7 cups of flour then how many batches of cupcakes can Benny make

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.