Xr13-78 The manager of a dairy is in the process of deciding which of two new carton-filling machines s21

= 28 n1 = 10 s22

= 19 n2 = 10 s21

= 350 n1 = 30 s22

= 700 n2 = 30 to use. The most important attribute is the consistency of the fills. In a preliminary study, she measured the fills in the 1-liter carton and listed them here. Can the manager infer that the two machines differ in their consistency of fills?

Machine 1 .998 .997 1.003 1.000 .999 1.000 .998 1.003 1.004 1.000 Machine 2 1.003 1.004 .997 .996 .999 1.003 1.000 1.005 1.002 1.004 .996