The human-factors department at a large corporation was asked to determine if er
ID: 3132598 • Letter: T
Question
The human-factors department at a large corporation was asked to determine if ergonomically designed workstations really improved the speed and accuracy at which employees were able to perform their duties. Thus, the department was planning to test a group of employees with the new workstations and compare their measures of speed and accuracy with the established mean and standard deviation for the company. What are the independent variable and dependent variable in this study? Who constitutes the population? Who constitutes the sample? What is the null hypothesis? What is the alternative hypothesis? What hypothesis testing procedure would you use and why?Explanation / Answer
a) Independent variable is no of work stations designed. Dependent veriable is performance ( Speed and accuracy)
b) Population is total no of employees in the corporation
Sample size is group of employee with new work stations.
c) Null Hypothesis : Ho : Performance of population = Performance of sample size
d) Alternate Hypothesis : Ha : Performance of Population < Performance of sample size.
e) Z statiztics with differences in means
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