Answer true or false. (NOTE: A statement that is not always true should be deemed false, so consider the statements carefully.) For each false statement, provide a corrected version of the statement.

a. Kill rates estimated as in part i immediately above may be understated in the case where there are multiple yield loss mechanisms present.

b. One may estimate the total yield loss from loss mechanisms that are mutually exclusive by adding the estimated losses from each mechanism. If the mechanisms may simultaneously affect the same die, then one must first compute the product of the yields for each mechanism, and then subtract the result from unity.

c. Assuming no change in statistics on equipment down time and process disqualification, dedicating machines to process steps increases cycle time.

d. If 50% of the machines in a given machine type are turned off but availability of the remaining machines is increased by 50%, then utilization of availability does not change and entitlement cycle time for that machine type does not change.