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15 Suppose 50 percent of the customers at Pizza Palooza order a square pizza, 70 percent order a soft drink, and 35 percent order both a square pizza and a 5011 drink. Is ordering a son drink independent of ordering a square pizza? 0 No D Yes 16 The discrete random variable X is the number of students that show up for Professor Smith's office hours on Monday afternoons. The table below shows the probability distribution for X. What is the expected value [(X) for this distribution X 1 2 3 Total P(X) . 40 .30 20 10 1.00 Multiple Choice O 1.2 O 1.0 O 1.5 O 2.017 A random variable is binomially distributed with n = 16 and / = .40. The expected value and standard deviation of the variables are Multiple Choice O 2.00 and 1.24 O 4.80 and 4.00 O 6.40 and 1.96 O 2.00 and 1.20Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 28 minutes and a standard 19 deviation of 4 minutes, while method 8 has a mean of 32 minutes and a standard deviation of 2.0 minutes. (a) Which procedure is preferred if the procedure must be completed within 29 minutes? O Method A O Method B Either Method (b) Which procedure is preferred if the procedure must be completed within 38.0 minutes? O Method A O Method B O Either Method (c) Which procedure is preferred if the procedure must be completed within 36 minutes? O Method A O Method B O Either Method