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 yea
Posted: Mon Jul 11, 2022 11:57 am
Data taken from a sample of 25 LED lamps, a sample average of 2years was obtained and a standard deviation of s=0.4 years. Theestimator of the mean of lifetime of LED lamps at the confidencelevel/coefficient (1-α) is