A botanist randomly selects 40 mature lodgepole pine trees in Yellowstone National Park. A mean height of 68.45 feet is calculated with a margin of error of ±6.20 for a 90% confidence interval.
What is the interval estimate of the population mean?
A) 61.61 < μ < 75.30
B) 62.25 < μ < 74.65
C) 62.56 < μ < 74.34
D) 65.03 < μ < 71.87