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An experiment was conducted to investigate the effect of management training on the decision-making abilities of supervisors in a large corporation. Sixteen supervisors were selected, and eight were randomly chosen to receive managerial training. Four trained and four untrained supervisors were then randomly selected to function in a situation in which a standard problem arose. The other eight supervisors were presented with an emergency situation in which standard procedures could not be used. The response was a management behavior rating for each supervisor as assessed by a rating scheme devised by the experimenter. a. What are the experimental units in this experiment? b. What are the two factors considered in the experiment? c. What are the levels of each factor? \(?\) ? d. How many treatments are there in the experiment? e. What type of experimental design has been used?

Short Answer

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Answer: In this experiment, the experimental units are the 16 individual supervisors. The factors considered are management training (trained or untrained) and problem type (standard problem or emergency situation). There are 2 levels for each factor and a total of 4 treatments. The type of experimental design used is a two-factor factorial design.

Step by step solution

01

a. Experimental units

The experimental units are the individual supervisors on whom the study is being conducted. In this experiment, there are 16 supervisors in total.
02

b. Factors in the experiment

Two factors are considered in this experiment: 1. Management training (whether the supervisor received managerial training or not) 2. Problem type (standard problem or an emergency situation)
03

c. Levels of each factor

Levels of each factor are: 1. Management training: - Trained - Untrained 2. Problem type: - Standard problem - Emergency situation
04

d. Number of treatments

The number of treatments in the experiment is determined by the number of possible combinations of the levels of the factors. In this case, we have 2 levels for the management training and 2 levels for the problem type. Thus, there are 2 x 2 = 4 treatments in total.
05

e. Type of experimental design

The type of experimental design used is a two-factor factorial design. This is because there are two factors being considered in the experiment: management training and problem type. The factorial design allows for the simultaneous study of the effects of these two factors on the decision-making abilities of supervisors.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Factorial Design
Understanding factorial design is crucial in comprehending complex experiments. In the context of the given exercise, a factorial design involves examining the influence of two independent factors, namely management training and problem type, on a dependent variable, which is the supervisors' decision-making abilities. A factorial design can efficiently test the interaction between factors as well as their individual effects.

Specifically, this design allows the experimenters to analyze how different levels of management training (trained or untrained) interacts with the problem type (standard problem or emergency situation) to affect the supervisors' behavior ratings. One of the primary strengths of factorial design is its ability to reveal interaction effects, which might be missed in simpler experimental designs.

In our case, the factorial design is a 2x2 factorial design since there are two factors, each with two levels. This type of design is particularly informative yet economical, as it can produce comprehensive data without requiring a large number of experimental units.
Experimental Units
In the realm of statistics, experimental units refer to the smallest division of entities that can independently receive different treatments in an experiment. These units are the subjects to which experimental conditions are applied. In our exercise, the experimental units are the sixteen supervisors who participate in the study.

Identifying the experimental units is of paramount importance as their characteristics can affect the outcome of the study. Inconsistent or incorrect identification of experimental units can lead to flawed data and thus misleading conclusions. For instance, if the unit was incorrectly identified as the training program itself rather than the supervisors, the conclusions drawn about the impact of managerial training on decision-making abilities would not be reliable.
Management Training Impact
Management training can be a vital factor in enhancing an individual's decision-making abilities. The impact of such training is what our exercise aims to measure. By comparing the performance of trained and untrained supervisors when faced with standard or emergency situations, researchers can gain insights into the effectiveness of management training programs.

In this controlled setting, the experimental design aims to isolate the training's impact from other variables that could influence decision-making. Measuring such impacts is complex, requiring rigorous testing and validation, but if done correctly, it can provide invaluable data for corporations looking to enhance managerial performance and decision-making through targeted training initiatives.
Decision-Making Abilities
The decision-making abilities of supervisors are central to the function and success of any management team. These abilities determine how a supervisor responds to challenges, daily tasks, and unexpected situations. The experiment outlined in the exercise assesses these abilities by using a management behavior rating scheme.

By creating scenarios that invoke standard and emergency decision-making processes, we can evaluate the impact different situations have on a supervisor's performance. The factorial design used in the study allows for a nuanced examination of these abilities by looking at how training and the nature of the problem interact, potentially uncovering whether the effect of management training depends on the type of problem faced.

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Most popular questions from this chapter

Exercise 10.40 examined an advertisement for Albertsons, a supermarket chain in the western United States. The advertiser claims that Albertsons has consistently had lower prices than four other full-service supermarkets. As part of a survey conducted by an "independent market basket price-checking company," the average weekly total based on the prices of approximately 95 items is given for five different supermarket chains recorded during 4 consecutive weeks. $$ \begin{array}{llrlll} & \text { Albertsons } & \text { Ralphs } & \text { Vons } & \text { Alpha Beta } & \text { Lucky } \\ \hline \text { Week 1 } & \$ 254.26 & \$ 256.03 & \$ 267.92 & \$ 260.71 & \$ 258.84 \\ \text { Week 2 } & 240.62 & 255.65 & 251.55 & 251.80 & 242.14 \\ \text { Week 3 } & 231.90 & 255.12 & 245.89 & 246.77 & 246.80 \\ \text { Week 4 } & 234.13 & 261.18 & 254.12 & 249.45 & 248.99 \end{array} $$ a. What type of design has been used in this experiment? b. Conduct an analysis of variance for the data. c. Is there sufficient evidence to indicate that there is a difference in the average weekly totals for the five supermarkets? Use \(\alpha=.05\) d. Use Tukey's method for paired comparisons to determine which of the means are significantly different from each other. Use \(\alpha=.05 .\)

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