Data taken from a sample of 25 LED lamps, a sample average of 2 years was obtained and a standard deviation of s=0.4 years. The estimator of the mean of lifetime of LED lamps at the confidence level/coefficient (1-α) is(2 ± 0.05 talpha/2 , where talpha/2 is the value of t in the t distribution with v=24)(2 ± 0.10 talpha/2 , where talpha/2 is the value of t in the t distribution with v=24)(2 ± 0.08 talpha/2 , where talpha/2 is the value of t in the t distribution with v=24(other)

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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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Data taken from a sample of 25 LED lamps, a sample average of 2 years was obtained and a standard deviation of s=0.4 years. The estimator of the mean of lifetime of LED lamps at the confidence level/coefficient (1-α) is

(2 ± 0.05 t_alpha/2 , where t_alpha/2 is the value of t in the t distribution with v=24)
(2 ± 0.10 t_alpha/2 , where t_alpha/2 is the value of t in the t distribution with v=24)
(2 ± 0.08 t_alpha/2 , where t_alpha/2 is the value of t in the t distribution with v=24
(other)