Juana is interested in estimating how long it takes students at her school to complete a maze she designed. She takes a random sample of 4 students and records how long it takes each of them to complete the maze. They work separately from each other, so Juana is willing to assume independence. Here are the data with summary statistics: Time (minutes) 49 28 37 42 Mean x ˉ = equals, 39 seconds Standard deviation s x = 8.83 seconds