The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 4. Approximately what percent of the trees are between 20 and 30 years old?

Question

Jerry Meyer

Mathematics

17 May, 18:48

The ages of trees in a forest are normally distributed with a mean of 25 years and a standard deviation of 4. Approximately what percent of the trees are between 20 and 30 years old?

+4

Answers (2)

Know the Answer?

Craig Hansen · Answer 1

Craig Hansen 17 May, 18:49

0

The correct answer is:

C: 78.87%

Dracula · Answer 2

The percentage that the trees are between 20 and 30 years old, base on the data you have given and by graphing its information, the percentage would be 78.88%. I hope you are satisfied with my answer and feel free to ask for more