Q1 A brand of concrete claims to have a tensile strength of 4MPa. 24 tests were conducted to determine the tensile stren
Posted: Tue Nov 23, 2021 9:21 am
Q1 A brand of concrete claims to have a tensile strength of 4MPa. 24 tests were conducted to determine the tensile strength. They yielded a sample mean of 3.85 MPa and a sample standard deviation of 0.22 MPa. Is there any evidence to support the claim?