To estimate the average time it takes to assemble a certain computer component, the industrial engineer at an electronics firm timed 16 technicians the performance of this task, getting a mean of 12.7 minutes and a standard deviation of 2.1 minutes. Construct a 95% confidence interval of the act average time required to do the job assuming that the actual time follows a normal distribution. (11.581, 13.819) (11.581, 13.620) (11.780, 13.620) (11.780, 13.819)
To estimate the average time it takes to assemble a certain computer component, the industrial engineer at an electronics firm timed 16 technicians the performance of this task, getting a mean of 12.7 minutes and a standard deviation of 2.1 minutes. Construct a 95% confidence interval of the act average time required to do the job assuming that the actual time follows a normal distribution. (11.581, 13.819) (11.581, 13.620) (11.780, 13.620) (11.780, 13.819)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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