at the movies jodie buys three regular popcorns and five small drinks for her friends at a cost of $24.50 her friend renee buyd four regular popcorns and three small drinks for her friends at a cost of $23.50. find the individual costs of a regular popcorn and a small drink

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.