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Room temperature and dexterity An expert on worker performance is interested in the
Chapter 4, Problem 83(choose chapter or problem)
An expert on worker performance is interested in the effect of room temperature on the performance of tasks requiring manual dexterity. She chooses temperatures of \(70^{\circ} \mathrm{F}\) and \(90^{\circ} \mathrm{F}\) as treatments. The response variable is the number of correct insertions, during a 30-minute period, in a peg-and-hole apparatus that requires the use of both hands simultaneously. Each subject is trained on the apparatus and then asked to make as many insertions as possible in 30 minutes of continuous effort.
(a) Describe a completely randomized design to compare dexterity at \(70^{\circ}\) and \(90^{\circ}\) using 20 volunteer subjects.
(b) Because individuals differ greatly in dexterity, the wide variation in individual scores may hide the systematic effect of temperature unless there are many subjects in each group. Describe in detail the design of a matched pairs experiment in which each subject serves as his or her own control.
Questions & Answers
QUESTION:
An expert on worker performance is interested in the effect of room temperature on the performance of tasks requiring manual dexterity. She chooses temperatures of \(70^{\circ} \mathrm{F}\) and \(90^{\circ} \mathrm{F}\) as treatments. The response variable is the number of correct insertions, during a 30-minute period, in a peg-and-hole apparatus that requires the use of both hands simultaneously. Each subject is trained on the apparatus and then asked to make as many insertions as possible in 30 minutes of continuous effort.
(a) Describe a completely randomized design to compare dexterity at \(70^{\circ}\) and \(90^{\circ}\) using 20 volunteer subjects.
(b) Because individuals differ greatly in dexterity, the wide variation in individual scores may hide the systematic effect of temperature unless there are many subjects in each group. Describe in detail the design of a matched pairs experiment in which each subject serves as his or her own control.
ANSWER:Step 1 of 3
Given that,
An expert on worker performance is interested in the effect of room temperature on the performance of tasks requiring manual dexterity. She chooses temperatures of 70F and 90F as treatments. The response variable is the number of correct insertions, during a 30-minute period, in a peg-and-hole apparatus that requires the use of both hands simultaneously. Each subject is trained on the apparatus and then asked to make as many insertions as possible in 30 minutes of continuous effort.