A public health official estimates from a random survey that the average sleep duration among adults in a city is 7.6 hours per night, with a margin of error of 0.4 hours. Which of the following is the most reasonable interpretation?
It is plausible that the actual average sleep duration for all adults in the city is between 7.2 and 8.0 hours per night.
Every adult in the city sleeps between 7.2 and 8.0 hours per night.
The exact average sleep duration among adults in the city is 7.6 hours per night.
The margin of error only applies to the sample, not the city population.
