Ashton Johnson

Mathematics

7 October, 11:46

Suppose the time it takes a data collection operator to fill out an electronic form for a database is uniformly distributed between 1.3 and 2.1 minutes. (a) Determine the mean of X (in minutes) (Round your answer to 2 decimal places.) (b) Determine the variance of X (in minutes2) (Round your answer to 4 decimal places.) (c) What is the probability it will take less than two minutes to fill out the form? (Round your answer to 3 decimal places.) (d) What is the probability it will take more than 90 seconds to fill out the form? (Round your answer to 3 decimal places.)