The length of a person's arm in centimeters is equal to 0.4 of his or her height in ccentimeters. How can this hypothesis be tested?

To test the hypothesis that a person's arm length is equal to 0.4 of their height, a study could be conducted where a sample group of individuals has both their height and arm length measured. The arm lengths would then be calculated as 0.4 times their respective heights, and these calculated values would be compared to the actual measured arm lengths. Statistical analysis, such as correlation or regression, could be used to determine if there is a significant relationship that supports or refutes the hypothesis.