Finger dexterity, the ability to make precisely coordinated finger movements to grasp or assemble very small objects,
Question:
Finger dexterity, the ability to make precisely coordinated finger movements to grasp or assemble very small objects, is important in jewelry making. Subsequently, the manufacturing manager at Gemco, a manufacturer of high-quality watches, wants to develop a regression model to predict the productivity (in watches per shift) of new employees based on dexterity. He has subjected a sample of 20 current employees to the O’Connor dexterity test in which the time required to place 3 pins in each of 100 small holes using tweezers is measured. A portion of the data is shown in the accompanying table.
Time (seconds) Watches per shift
513……………………………………….23
608……………………………………….19
⋮……………………………………………⋮
437……………………………………….20
a. Use Excel to estimate the model: Watches = β0 + β1Time + ε.
b. Interpret the coefficient of Time.
c. Explain why the y-intercept makes no practical sense in this particular problem.
d. Suppose a new employee takes 550 seconds on the dexterity test. How many watches per shift is she expected to produce?
Step by Step Answer:
Business Statistics Communicating With Numbers
ISBN: 9780078020551
2nd Edition
Authors: Sanjiv Jaggia, Alison Kelly