Boris heban is single and pays into an hmo. the total cost is $8,190 annually, and the employer pays 90 percent of the total cost. he also pays 50 percent of the optional annual dental premium of $662 and 50 percent of the optional vision premium of $188. how much is deducted each week from his paycheck?

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.