Q3. Your company manufactures plastic wrap for food storage. The tear resistance of the wrap, denoted by X, must be controlled so that the wrap can be torn off the roll without too much effort, but it does not tear too easily when in use. In a series of test runs, 15 rolls of wrap are made under carefully controlled conditions and the tear resistance of each roll is measured. The results are used as the basis of a quality assurance specification. If for a subsequently produced roll falls more than two standard deviations away from the test period average, the process is declared out of specification and production is suspended for routine maintenance. The series of the data is Roll 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 134 131 129 133 135 131 134 130 131 136 129 130 133 130 133 X I. II. Calculate mean, standard deviation, median min and max tear resistance of the wrap using calculator Write a spreadsheet to take as input the test series data and calculate the sample mean (X®) and sample standard deviation (std or sz), preferably using built-in functions for the calculations.