Suggest the strength of cotton yarn used in a weaving factory, in pounds of force at breakage, measured from a sample of yarn from the supplies room: 117, 135, 94, 79, 90, 85, 173, 102, 78, 85, 100, 205, 93, 93, 177, 148, 107
Find the 99% confidence interval for the strength of cotton yarn used in a weaving factory based on the data above.