The State Department of Forests has determined that annual tree growth in a particular forest area is normally distributed with a mean equal to 17 inches and a standard deviation equal to 6 inches. Based on this information, it is possible for a randomly selected tree not to have grown any during a year.

Question

Quizplus · Accepted Answer

Given the normal distribution of tree growth, while it is highly unlikely, it is still possible for a tree to have zero growth in a year, as normal distributions cover a range of values including extremes.

The State Department of Forests Has Determined That Annual Tree