A large milling machine produces steel rods to certain specifications. The machine is considered to be running normally if the standard deviation of the diameter of the rods is at most 0.42 millimeters. The line supervisor needs to test the machine is for normal functionality. The quality inspector takes a sample of 45 rods and finds that the sample standard deviation is 0.49. What is the test statistic? Select one: a. 59.89 b. 48.63 c. 50.50 d. 52.45

A large milling machine produces steel rods to certain specifications. The machine is considered to be running normally if the standard deviation of the diameter of the rods is at most 0.42 millimeters. The line supervisor needs to test the machine is for normal functionality. The quality inspector takes a sample of 45 rods and finds that the sample standard deviation is 0.49. What is the test statistic? Select one: a. 59.89 b. 48.63 c. 50.50 d. 52.45

Managerial Economics: A Problem Solving Approach

5th Edition

ISBN:9781337106665

Author:Luke M. Froeb, Brian T. McCann, Michael R. Ward, Mike Shor

Publisher:Luke M. Froeb, Brian T. McCann, Michael R. Ward, Mike Shor

Chapter17: Making Decisions With Uncertainty

Section: Chapter Questions

Problem 8MC

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Question

A large milling machine produces steel rods to
certain specifications. The machine is
considered to be running normally if the
standard deviation of the diameter of the rods
is at most 0.42 millimeters. The line supervisor
needs to test the machine is for normal
functionality. The quality inspector takes a
sample of 45 rods and finds that the sample
standard deviation is 0.49. What is the test
statistic?
Select one:
а. 59.89
b. 48.63
с. 50.50
d. 52.45

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