Reading 8: Probability Concepts-LOS o, (Part 1)习题精选 particular, face, 2010, problem, employees

bmaggie

Session 2: Quantitative Methods: Basic Concepts
Reading 8: Probability Concepts

LOS o, (Part 1): Identify the most appropriate method to solve a particular counting problem.

 

 

 

If a firm is going to create three teams of four from twelve employees. Which approach is the most appropriate for determining how the twelve employees can be selected for the three teams?

A) Permutation formula.

B) Combination formula.

C) Labeling formula.

bmaggie

If a firm is going to create three teams of four from twelve employees. Which approach is the most appropriate for determining how the twelve employees can be selected for the three teams?

A) Permutation formula.

B) Combination formula.

C) Labeling formula.

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This problem is a labeling problem where the 12 employees will be assigned one of three labels. It requires the labeling formula.

In this case there are [(12!) / (4!4!4!)] = 34,650 ways to group the employees.

bmaggie

For the task of arranging a given number of items without any sub-groups, this would require:

A) the labeling formula.

B) the permutation formula.

C) only the factorial function.

bmaggie

For the task of arranging a given number of items without any sub-groups, this would require:

A) the labeling formula.

B) the permutation formula.

C) only the factorial function.

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The factorial function, denoted n!, tells how many different ways n items can be arranged where all the items are included.

bmaggie

Which of the following statements about counting methods is least accurate?

A) The labeling formula determines the number of different ways to assign a given number of different labels to a set of objects.

B) The combination formula determines the number of different ways a group of objects can be drawn in a specific order from a larger sized group of objects.

C) The multiplication rule of counting is used to determine the number of different ways to choose one object from each of two or more groups.

bmaggie

Which of the following statements about counting methods is least accurate?

A) The labeling formula determines the number of different ways to assign a given number of different labels to a set of objects.

B) The combination formula determines the number of different ways a group of objects can be drawn in a specific order from a larger sized group of objects.

C) The multiplication rule of counting is used to determine the number of different ways to choose one object from each of two or more groups.

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The permutation formula is used to find the number of possible ways to draw r objects from a set of n objects when the order in which the objects are drawn matters. The combination formula ("n choose r") is used to find the number of possible ways to draw r objects from a set of n objects when order is not important. The other statements are accurate.

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