The tensile strength of silicone rubber is thought to be a function of curing temperature. A study was carried out in which 12 specimens of the rubber were prepared using curing temperatures of
20\deg Cand
45\deg C. The accompanying data table shows the tensile strength values in megapascals. Complete parts (a) through (d) below. Rubber Tensile Strengths (a) Show a dot plot of the data with both low and high temperature tensile strength values. (b) Compute the sample mean tensile strength for both samples. (Round to three decimal places as needed.) (c) Does it appear as if curing temperature has an effect on tensile strength, based on the plot? Comment further. (d) Does anything else appear to be influenced by an increase in curing temperature? Explain.
