Answered: A student was asked to find a 90%…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A student was asked to find a 90% confidence interval for widget width using data from a random sample of size n = 15.

Which of the following is a correct interpretation of the interval 13.5 < μ < 23.1?

A)There is a 90% probability that the mean of a sample of 15 widgets will be between 13.5 and 23.1.

B) With 90% confidence, the mean width of all widgets is between 13.5 and 23.1.

C) With 90% confidence, the mean width of a randomly selected widget will be between 13.5 and 23.1.

D) The mean width of all widgets is between 13.5 and 23.1, 90% of the time. We know this is true because the mean of our sample is between 13.5 and 23.1.

E) There is a 90% probability that the mean of the population is between 13.5 and 23.1.

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