The following longitudinal tensile strength data (in MPa) were obtained for a [0/+45/90], E-glass fiber-epoxy laminate: 518.05, 472.25, 448.50, 560.20, 555.32, 496.95, 526.50, 550.80, 495.08, 500.05, 498.80, 522.64, and 580.70. (a) Determine the average tensile strength, the standard deviation, and coefficient of variation (b) Determine the Weibull parameters for the given strength distribution (c) Using the Weibull parameters in (b), determine the mean strength for the material