Shows the data obtained from a paired experiment performed to examine which of two assembly methods is quicker on average. A random sample of 35 workers on an assembly line were selected and all were timed while they assembled an item in the standard manner (method A) and while they assembled an item in the new manner (method B). The times in seconds are recorded. Analyze the data set and present your conclusions on how the new assembly method differs from the standard assembly method. Why are the two data samples paired? Why did the experimenter decide to perform a paired experiment rather than an unpaired experiment?