Doctors recommend that teenagers sleep between 9 and 9 1/2 hours each night. Melody and Wilmer construct a box plot to display sleep data collected from two samples of students. Does this data support the petition to delay the school starting time so school starts 1 hour later? Explain.

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3