Answer: An interval is a range of values for a statistic.
Explanation:
For example, you might think that the mean of a data set falls somewhere between 10 and 100 (10 < μ < 100). That “somewhere between 5 and 15%” is an interval estimate.
How many ounces of fertilizer the landscaper apply? The answer is 15 OUNCES
IB does this. The IB plans out a students high school courses over at least 2 years. Trust me, I'm in it! Hope that helps!