Theorem: a line parallel to one side of a triangle divides the other two proportionately.. in the figure below, segment de is parallel to segment bc and segment ef is parallel to ab. which statement can be proved true using the given theorem?

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.