The Poisson probability distribution is used with _____
a. a continuous random variable
b. a discrete random variable
c. either a continuous or discrete random variable
d. any random variable
b
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Which of the following statements about histograms is false?
a. The intervals of a histogram do not overlap. b. Every observation is assigned to one and only one class in a histogram. c. The intervals of a histogram are equally wide. d. None of these choices.
Kamal argues that 9 AM is a bad time to sign up for a small discussion group because he will be too tired from the previous night's activities. He prefers to sign up for a large lecture class at that time. Raoul disagrees, noting that this small discussion group is something they both wanted to do and will require their attention, while they may not focus in the lecture class. Kamal says that this is not a commonsense approach. What weakness does Kamal exhibit?
A. lack of self-awareness B. lack of objectivity C. lack of rigor D. over-reliance on hindsight E. lack of authenticity
A company inadvertently produced 3,000 defective products. The product cost $15 each to be manufactured and normally sells for $35 each. A salvage company will purchase the defective units as they are for $13 each. The production manager reports that the defects can be corrected for $5 per unit, enabling the company to sell them at a discounted price of $22.00. The repair operations would not affect other production operations. Prepare an analysis that shows which action should be taken.
What will be an ideal response?
To test the validity of the selection test for advanced widget designers, Correll-Techno Inc. administers the test to the present widget makers in the company. The test results are then compared with the employees' latest performance appraisal scores. In this instance, what type of validation does Correll-Techno implement?
A. Predictive validation B. Concurrent validation C. Content validation D. Construct validation E. Diagnostic validation