A cement manufacturer claims that the average weight of his product is 40 kgs. with a standard deviation of 2.35 kgs. A sample of 45 bags was taken and found to have a mean weight of 38.71 kgs. Are we...

Extracted text: A cement manufacturer claims that the average weight of his product is 40 kgs. with a standard deviation of 2.35 kgs. A sample of 45 bags was taken and found to have a mean weight of 38.71 kgs. Are we going to accept the claim of the cement manufacturer? Use = .01. 3.