Kellogg's is interested in estimating the mean fill weight of their corn flakes cereal boxes. They take a sample of 60 boxes and calculate the sample mean to be 12.13 oz. and the sample standard deviation to be 0.41 oz. 1. Is it believable that the mean fill weight is 12.000 oz? Is it believable that =12.000 oz? Find appropriate 90% CI X=fill weight of a cereal box X~??(,2 ) don't know or 2 estimate with and S2