No.PZ2019040801000025 (选择题)来源: 品职出题
Assuming the height of a tree in a forest follows a normal distribution, there are more than 10,000 trees. The sample size of test is 200, the 95% confidence interval of the sample mean of the height is 11 to 35 meters based on a z-statistic, the standard error of mean height is closest to:
老师您好，我理解中题目的standard error应该是s除以根号n的，但是解题时这里是s，好像是我没有分清楚两个的区别，请老师能帮忙解答一下
