can a confidence interval for true average lifetime be calculated without assuming anything about the nature of the lifetime distribution? explain your reasoning. [note: a normal probability plot of the data exhibits a reasonably linear pattern.]
O No, we need to assume that the population is normally distributed. O Yes, the sample size is large enough for the confidence interval to be reasonable. O No, the sample size is not large enough for the confidence interval to be reasonable. O Yes, the range is sufficiently large enough for the confidence interval to be reasonable. O No, the range is not large enough for the confidence interval to be reasonable.