(devore 1.45ab) the value of youngs modulus (gpa) was determined for cast plates consisting of certain intermetallic substrates, resulting in the following sample observations ("strength and modulus of a molybdenum-coated ti-25al-10nb-3u- 1mo intermetallic," j. of materials engr. and performance, 1997: 4650): 116.4 115.9 114.6 115.2 115.8 (a) calculate ¯x and the deviations from the mean. (b) use the deviations calculated in part (a) to obtain the sample variance and the sample standard deviation.