Sixteen Cartons are taken at random from an automatic filling machine. The mean net weight of the 16 cartons is 15.4 OZ. and the standard deviation is 0.88 OZ. Can we say that there is a significant difference of the sample mean from the intended weight of 16 OZ ?
(It is given that value oft for 15, 16, 17 degrees of freedom at 5% level of significance are 2.131, 2.120 ( and 2.110).