Pierre Simon Laplace, Inverse Probability, Central Limit Theorem, Probability, Deep Dives.
Author) Your calculations are telling you that there is a 95% chance that the real mean broadband speed will lie in the interval [397.87974 Mbps, 399.75222 Mbps] conditioned upon your observed sample mean of 398.81598 Mbps. Epilogue In 1812 (or 1810 depending on your viewpoint), with his discovery