Agroup of 1400 people took a survey. the survey shows that 70% of the people like pizza. of those who like pizza, 60% prefer cheese pizza. how many people in the survey prefer cheese pizza? answer fast

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.