Tia martinez has $200.25 deducted from her semimonthly pay for group health insurance. rocky mountain ski parts, her employer, pays 60% of the cost. what is tia's annual premium for health insurance?

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.