6

a

b

Product X's demand is normally distributed with mean 150 and standard deviation 50. Product Y's demand is also normally distributed with a mean of 150 and a standard deviation of 50. The sum of demand for these two products is normally distributed with a mean of 300 and a standard deviation of 50. Which of the following results is most likely? O Demands for these products are negatively correlated Demands for these products are positively correlated Demands for these products are independent. O It is not possible to determine with this information the correlation of these products. Consider two prototypes of a new race car. One is a two-dimensional sketch; the other one is a physical model that almost looks like the new race car, except it has no engine inside. Which of the two is a higher-fidelity prototype? The two-dimensional sketch The physical model The word fidelity only applies to processes, not to prototypes The total demand rate for a resource is the sum of the individual demand rates that need to be processed by the resource. True or False True False