You are making balloons arrangements for a brithday party. there are 16 white balloons and 24 red balloons each arrangement must be identical what is the greatest number of arrangements you can make using every ballon

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.