A consumer testing agency has tested the strength of 3 brands of 1/8-inch rope. The results of the test are shown in the table below. According to the sample test results, which company produces...

A consumer testing agency has tested the strength of 3 brands of 1/8-inch rope. The results of the test are shown in the table below. According to the sample test results, which company produces 1/8-inch rope for which the breaking-point has the smallest standard deviation? Show your solution and make a conjecture.  CompanyBreaking point of 1/8-inch rope  Trustworthy122, 141, 151, 114,108, 149, 125, 101                                        Brand X128, 127, 148, 164, 97, 109, 137, 120                                              NeverSnap112, 121, 138, 131, 134, 139, 135, 130