Which is not true of the z?, formula for a population percentage estimation?
A) The z stands for the z value for the level of confidence.
B) The z value will typically be for a 95% or 99% level of confidence.
C) The a equals the sample percentage.
D) The a will typically be for a 95% or 99% level of confidence.
E) The z value will normally correspond to ±1.96 or ±2.58 standard errors.
C
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The set of policies that outline management's commitment to ethical and honest behavior while guiding personnel who are confronted with difficult situations
a. Policies defining buyer-seller relationships b. Policies defining social and minority business objectives c. Policies defining operational issues d. Policies defining conduct of purchasing personnel e. Policies defining the role of purchasing
A drilling machine has a mean time between failures of 368 hours and mean time to repair of 9 hours. In this case, the availability is ______.
a. 97.6% b. 89.7% c. 78.9% d. 93.8%