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Published on February 11, 2025
The 95% confidence interval for the population mean is approximately [13.984, 14.416]
not correct 13.984 ; 14.416 kannst du damit was anfangen?
The provided text details step-by-step calculations for confidence intervals of means and variances, along with sample size determination, under different scenarios (known and unknown population standard deviation). The solutions involve using z-scores, t-scores, and chi-squared values to construct intervals for population parameters.
The 99% confidence interval for the population mean length of steel sheets is [35.71, 38.29] cm.