A study was carried out to find out if curing temperature significantly affects the tensile strength of silicone rubber. An axially controlled automated hydraulic force applicator was employed to measure the tensile strength (in mega-pascals, MPa) of each of specimens. The Results are given below.
Temperature (Celsius)
at 25 Celsius - 2.09, 2.14, 2.18, 2.05, 2.18, 2.11
at 40 Celsius - 2.22, 2.09, 2.10, 2.02, 2.05, 2.01
at 55 Celsius - 2.03, 2.22, 2.10, 2.07, 2.03, 2.15
a.) Test the hypothesis that the curing temperatures affect tensile strength of silicone rubber. Employ a P-value approach.
b.) Develop a box plots of the data. Do such support your conclusions. Discuss