Juanita needed 3 and 1/4 hours to take a standardized test, and Jordan needed 5 and 1/2 hours. How much more time did Jordan need than Juanita to take the test?

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?

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.