In a study, a scientist estimates that the mean lifespan of a certain fish species is 13.8 years, with a margin of error of 0.7 years. What conclusion can the scientist appropriately make about the mean lifespan in the population?
The true mean lifespan is exactly 13.8 years.
It is plausible that the mean lifespan for the population is between 13.1 and 14.5 years.
No fish lives less than 13.1 or more than 14.5 years.
All sample fish lived between 13.1 and 14.5 years.
