Answered: A company has analysed data for a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Question

A company has analysed data for a sample of employees who have undertaken training designed to improve their performance in completing a timed task. For each employee in the sample, data shows the time taken to perform the task before training and the time taken post training.

The data was used to construct a 95% confidence interval for the mean difference in time taken (before - after), and the interval was (6,10) minutes. Which of the following inferences is correct?

Select one:

a.The confidence interval indicates that there could be no difference, on average, between the time it takes to perform the task after training and before training.

b.We are 95% confident that the time taken to perform the task is lower after training than before training, on average.

c.We are 95% confident that the mean reduction in the time taken to perform the task after training is 8 minutes.

d.We are 95% confident that everyone doing the training will then be able to perform the task at least 6 minutes faster.

Expert Solution