Question

14) Compute the sample variance 52 if a data set X = (X1, X2, X3 1 = {a,b,c) with, Variation of a = - 2, Variation of b = -1, and Variation of c = 3, A) 14 B) 0 C) 14/3 D) 7 15) Compute the sample variance 52 - _ if a data set X = (X1, X2, X3...X491, x =98, 12-628. A) 3 B) 2 C)4 D) 9 16) Compute the sample standard deviation, s = _ if a data set X = (X1, X2, X3.......X491 with Sx=98, X2 = 628. A) 3 B) 9 C)2 D)4 Find the mean of the data summarized in the given frequency distribution. 17) The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency distribution below summarizes the results. Find the Sample Mean waiting time (Weighted Average). Round your answer to one decimal place. 17) Waiting time (minutes) INumebr of Customers | Xmid = 1 fXmid - LL - UL 0 - 11 T5.5 176 12 - 19 15.5 10 20 - 27 13.5 A) 13.5 min B) 7.0 min C) 9.2 min D) 9.4 min In Problems 18 through 24, given a Whisker-and-Box Plot with values of its 5-number below: 18) 3.5 6.4 7.0 7.7 8.7 Given a daat set of the weights (in pounds) of 30 newborn babies as X -DX1, X2, X3....., X30) and x=219. The Whisker-and-Box plot of the data set of the weights as shown in the figure above Find Range = A) 0.7 B) 1.3 C) 2.3 D) 3.2 19) Given same information as one in Problem 18. Find the Variation of 8 -_ in pounds A) 1.0 B) - 1.0 C) -1.6 D) 0.7