A botanist is developing a new, fast-growing strain of cottonwood tree, and she wants to use a confidence interval to estimate the true mean height of trees of the new strain when they are ten years old. The distribution of heights of individual ten-year-old cottonwoods is normal. She selects a simple random sample of 12 tenyear-old trees, measures their heights (in feet), and calculates the 95% confidence interval (68, 74). Which of the following is the best way to report or interpret this confidence interval?

Question 20 options:

a) There is a 95% chance that the true mean height of ten-year-old trees of the new strain is between 68 feet and 74 feet.

b) There is a 95% chance that the sample mean height of ten-year-old trees of the new strain is between 68 feet and 74 feet.

c) She can be 95% confident that the true mean height of ten-year-old trees of the new strain is between 68 feet and 74 feet.

d) She can be 95% confident that trees of the new strain grow quickly